OMX Hal: depend on libavservices_minijail_vendor.

libminijail_vendor was added so that OMX can depend on
it. However, OMX's dependency is actually through the
library libavservices_minijail.

Bug: 37343418
Test: (sanity) YouTube
Test: dependency error no longer shows when compiling with
  BOARD_VNDK_VERSION := current
Change-Id: Ife1dc09d8d225adf592829da9cf5603f8f543709
diff --git a/services/mediacodec/Android.mk b/services/mediacodec/Android.mk
index d3df52c..39a83c7 100644
--- a/services/mediacodec/Android.mk
+++ b/services/mediacodec/Android.mk
@@ -30,7 +30,7 @@
     libgui \
     liblog \
     libbase \
-    libavservices_minijail \
+    libavservices_minijail_vendor \
     libcutils \
     libhwbinder \
     libhidltransport \