Removes p_rng param from mbedtls_rsa_rsassa_pss_verify

Commit removes p_rng parameter from
mbedtls_rsa_rsassa_pss_verify function
as preparation for removing the mode
parameter.

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/include/mbedtls/rsa.h b/include/mbedtls/rsa.h
index 869bfd9..a89c1f5 100644
--- a/include/mbedtls/rsa.h
+++ b/include/mbedtls/rsa.h
@@ -1057,8 +1057,6 @@
  * \param f_rng    The RNG function to use. If \p mode is #MBEDTLS_RSA_PRIVATE,
  *                 this is used for blinding and should be provided; see
  *                 mbedtls_rsa_private() for more. Otherwise, it is ignored.
- * \param p_rng    The RNG context to be passed to \p f_rng. This may be
- *                 \c NULL if \p f_rng is \c NULL or doesn't need a context.
  * \param mode     The mode of operation. This must be either
  *                 #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE (deprecated).
  * \param md_alg   The message-digest algorithm used to hash the original data.
@@ -1079,7 +1077,6 @@
  */
 int mbedtls_rsa_rsassa_pss_verify( mbedtls_rsa_context *ctx,
                            int (*f_rng)(void *, unsigned char *, size_t),
-                           void *p_rng,
                            int mode,
                            mbedtls_md_type_t md_alg,
                            unsigned int hashlen,
diff --git a/library/psa_crypto_rsa.c b/library/psa_crypto_rsa.c
index 11c9ab2..464e027 100644
--- a/library/psa_crypto_rsa.c
+++ b/library/psa_crypto_rsa.c
@@ -503,7 +503,6 @@
         mbedtls_rsa_set_padding( rsa, MBEDTLS_RSA_PKCS_V21, md_alg );
         ret = mbedtls_rsa_rsassa_pss_verify( rsa,
                                              mbedtls_psa_get_random,
-                                             MBEDTLS_PSA_RANDOM_STATE,
                                              MBEDTLS_RSA_PUBLIC,
                                              MBEDTLS_MD_NONE,
                                              (unsigned int) hash_length,
diff --git a/library/rsa.c b/library/rsa.c
index bdb2b7e..333747e 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -2298,7 +2298,6 @@
  */
 int mbedtls_rsa_rsassa_pss_verify( mbedtls_rsa_context *ctx,
                            int (*f_rng)(void *, unsigned char *, size_t),
-                           void *p_rng,
                            int mode,
                            mbedtls_md_type_t md_alg,
                            unsigned int hashlen,
@@ -2318,7 +2317,7 @@
                              ? (mbedtls_md_type_t) ctx->hash_id
                              : md_alg;
 
-    return( mbedtls_rsa_rsassa_pss_verify_ext( ctx, f_rng, p_rng, mode,
+    return( mbedtls_rsa_rsassa_pss_verify_ext( ctx, f_rng, NULL, mode,
                                        md_alg, hashlen, hash,
                                        mgf1_hash_id, MBEDTLS_RSA_SALT_LEN_ANY,
                                        sig ) );
@@ -2425,7 +2424,7 @@
 
 #if defined(MBEDTLS_PKCS1_V21)
         case MBEDTLS_RSA_PKCS_V21:
-            return mbedtls_rsa_rsassa_pss_verify( ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC, md_alg,
+            return mbedtls_rsa_rsassa_pss_verify( ctx, NULL, MBEDTLS_RSA_PUBLIC, md_alg,
                                           hashlen, hash, sig );
 #endif
 
diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index f6aaa7a..41cef93 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -315,22 +315,22 @@
                                                           buf ) );
 
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
-                            mbedtls_rsa_rsassa_pss_verify( NULL, NULL, NULL,
+                            mbedtls_rsa_rsassa_pss_verify( NULL, NULL,
                                                            MBEDTLS_RSA_PUBLIC,
                                                            0, sizeof( buf ),
                                                            buf, buf ) );
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
-                            mbedtls_rsa_rsassa_pss_verify( &ctx, NULL, NULL,
+                            mbedtls_rsa_rsassa_pss_verify( &ctx, NULL,
                                                            MBEDTLS_RSA_PUBLIC,
                                                            0, sizeof( buf ),
                                                            NULL, buf ) );
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
-                            mbedtls_rsa_rsassa_pss_verify( &ctx, NULL, NULL,
+                            mbedtls_rsa_rsassa_pss_verify( &ctx, NULL,
                                                            MBEDTLS_RSA_PUBLIC,
                                                            0, sizeof( buf ),
                                                            buf, NULL ) );
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
-                            mbedtls_rsa_rsassa_pss_verify( &ctx, NULL, NULL,
+                            mbedtls_rsa_rsassa_pss_verify( &ctx, NULL,
                                                            MBEDTLS_RSA_PUBLIC,
                                                            MBEDTLS_MD_SHA1,
                                                            0, NULL,