hwc: Add MetaData support in overlay path.

DONE:
    1. HSIC(SPA) test.
    2. IGC R/G/B channel test.
    3. QSEED2 sharpening/smooth test verified through register value check.

Change-Id: Ia9472f489c013df22a3411eeaac3c8d1e6e22ac0
diff --git a/common.mk b/common.mk
index 360032b..f2ae8b2 100644
--- a/common.mk
+++ b/common.mk
@@ -12,10 +12,13 @@
     common_includes += $(TARGET_OUT_HEADERS)/pp/inc
 endif
 
-
 #Common libraries external to display HAL
 common_libs := liblog libutils libcutils libhardware
 
+ifeq ($(TARGET_USES_POST_PROCESSING),true)
+    common_libs += libmm-abl
+endif
+
 #Common C flags
 common_flags := -DDEBUG_CALC_FPS -Wno-missing-field-initializers
 common_flags += -Werror