Fix build. Include camera metadata headers.

Change-Id: I96fd33c217c12521dd0870ad1b0ae083abd87e19
diff --git a/camera/Android.mk b/camera/Android.mk
index 178020e..5d9dac1 100755
--- a/camera/Android.mk
+++ b/camera/Android.mk
@@ -100,10 +100,10 @@
 
 
       ifeq ($(V4L2_BASED_LIBCAM),true)
-        LOCAL_SHARED_LIBRARIES:= libutils libui libcamera_client liblog libcutils
+        LOCAL_SHARED_LIBRARIES:= libutils libui libcamera_client libcamera_metadata liblog libcutils
         LOCAL_SHARED_LIBRARIES += libmmcamera_interface2
       else
-         LOCAL_SHARED_LIBRARIES:= libutils libui libcamera_client liblog libcutils libmmjpeg
+         LOCAL_SHARED_LIBRARIES:= libutils libui libcamera_client liblog libcamera_metadata libcutils libmmjpeg
       endif
 
       LOCAL_SHARED_LIBRARIES+= libgenlock libbinder