mm-video: vdec: Fix compilation error for Dynamic Buffer mode

struct VideoDecoderOutputMetaData definition is available
only on KitKat release. This patch includes the struct definition
locally for JB_MR2, to prevent compilation failures on JB_MR2.

Change-Id: If56acfe080e731aec2d860703aea1726bb6343cf
diff --git a/mm-video-v4l2/vidc/vdec/Android.mk b/mm-video-v4l2/vidc/vdec/Android.mk
index 8d602fa..c76df50 100755
--- a/mm-video-v4l2/vidc/vdec/Android.mk
+++ b/mm-video-v4l2/vidc/vdec/Android.mk
@@ -111,6 +111,11 @@
 libmm-vdec-inc      += frameworks/av/include/media/stagefright
 libmm-vdec-inc      += $(TARGET_OUT_HEADERS)/mm-video/SwVdec
 
+ifeq ($(PLATFORM_SDK_VERSION), 18)  #JB_MR2
+libOmxVdec-def += -DANDROID_JELLYBEAN_MR2=1
+libmm-vdec-inc += hardware/qcom/media/libstagefrighthw
+endif
+
 LOCAL_MODULE                    := libOmxVdec
 LOCAL_MODULE_TAGS               := optional
 LOCAL_CFLAGS                    := $(libOmxVdec-def)