Use libstagefright_foundation_vendor

DRM HAL is a library in vendor. When BOARD_VNDK_VERSION is turned
on, any lib in vendor partition can only link against to other vendor
libs or libs marked as vendor_available:true. This lib is using
libstagefright_foundation and the lib is not available to vendors.
Instead, libstagefright_foundation_vendor is provided as a
vendor-variant of the foundation library. Thus switching to the vendor
variant.

Bug: 37462569
Test: m android.hardware.drm@1.0-impl
Change-Id: Iaee9886f9ba3643e1c19928690bad13c26ac29d7
diff --git a/drm/1.0/default/Android.mk b/drm/1.0/default/Android.mk
index 4c05da8..7084d1b 100644
--- a/drm/1.0/default/Android.mk
+++ b/drm/1.0/default/Android.mk
@@ -72,7 +72,7 @@
     libhidltransport \
     liblog \
     libmediadrm \
-    libstagefright_foundation \
+    libstagefright_foundation_vendor \
     libutils \
 
 LOCAL_C_INCLUDES := \