Add optional tags to OpenSSL.

Change-Id: I45a7de1d858907239c23e0682ef1f52920d35502
diff --git a/crypto/Android.mk b/crypto/Android.mk
index 912f7c8..c3d6aba 100644
--- a/crypto/Android.mk
+++ b/crypto/Android.mk
@@ -503,6 +503,7 @@
 else
 	LOCAL_SHARED_LIBRARIES += libdl
 endif
+LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE:= libcrypto
 include $(BUILD_SHARED_LIBRARY)
 
@@ -516,6 +517,7 @@
     LOCAL_SRC_FILES += $(non_arm_src_files)
     LOCAL_STATIC_LIBRARIES += libz
     LOCAL_LDLIBS += -ldl
+    LOCAL_MODULE_TAGS := optional
     LOCAL_MODULE:= libcrypto
     include $(BUILD_HOST_SHARED_LIBRARY)
 endif
diff --git a/ssl/Android.mk b/ssl/Android.mk
index f3fc03a..fb9d34c 100644
--- a/ssl/Android.mk
+++ b/ssl/Android.mk
@@ -49,6 +49,7 @@
 LOCAL_SRC_FILES += $(local_src_files)
 LOCAL_C_INCLUDES += $(local_c_includes)
 LOCAL_SHARED_LIBRARIES += libcrypto
+LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE:= libssl
 include $(BUILD_SHARED_LIBRARY)
 
@@ -58,6 +59,7 @@
     LOCAL_SRC_FILES += $(local_src_files)
     LOCAL_C_INCLUDES += $(local_c_includes)
     LOCAL_SHARED_LIBRARIES += libcrypto
+    LOCAL_MODULE_TAGS := optional
     LOCAL_MODULE:= libssl
     include $(BUILD_HOST_SHARED_LIBRARY)
 endif