Mark libblas as VNDK-SP

libblas is used by libRSCpuRef which is also VNDK-SP. Since VNDK-SP can
only depend on VNDK-SP or LL-NDK libraries, libblas is marked as
VNDK-SP.

Bug: 64425518
Test: BOARD_VNDK_VERSION=current m -j libblas.vendor

Change-Id: Ie610047290759297f2fa26f2eb8ab6a5450b3685
diff --git a/Android.bp b/Android.bp
index 4e439d1..e6ca010 100644
--- a/Android.bp
+++ b/Android.bp
@@ -167,6 +167,11 @@
 
 cc_library_shared {
     name: "libblas",
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
     defaults: ["cblas-defaults"],
     static_libs: ["libF77blas"],
 }