Fix a race in build for missing vbp_loader.h

If the vbp_header.h doesn't copied then it was
breaking videodecoder build. This fixes the race.

Bug: 16897377

Change-Id: I9d5da2eb0883ff8ad4ca9a4ed0414cc9a44a1be4
diff --git a/videodecoder/Android.mk b/videodecoder/Android.mk
index 885b325..53e3283 100644
--- a/videodecoder/Android.mk
+++ b/videodecoder/Android.mk
@@ -70,6 +70,7 @@
 LOCAL_CFLAGS += -Werror
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE := libva_videodecoder
+LOCAL_REQUIRED_MODULES :=libmixvbp
 
 ifeq ($(USE_HW_VP8),true)
 LOCAL_SRC_FILES += VideoDecoderVP8.cpp