mm-core: Set omx header library as vendor module

CRs-Fixed: 2596430

Change-Id: Ibac5e5ed5174b824e13185c034a5c43c4fe7ae34
diff --git a/mm-core/Android.mk b/mm-core/Android.mk
index 35a53f1..772f3e8 100644
--- a/mm-core/Android.mk
+++ b/mm-core/Android.mk
@@ -145,7 +145,7 @@
 
 LOCAL_MODULE := libomxcore_headers
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/inc
-LOCAL_PROPRIETARY_MODULE := true
+LOCAL_VENDOR_MODULE := true
 
 include $(BUILD_HEADER_LIBRARY)