display : Add support for copybit composition

This change add support for copybit composition in display HAL
for MDP3 targets.

Change-Id: I9bc8e40f624b0760f4faa223cb03a13695611bb3
Acked-by: Sravan Kumar D.V.N <sravank1@codeaurora.org>
diff --git a/libhwcomposer/Android.mk b/libhwcomposer/Android.mk
index 8e04606..5067a2a 100644
--- a/libhwcomposer/Android.mk
+++ b/libhwcomposer/Android.mk
@@ -6,9 +6,10 @@
 LOCAL_MODULE_TAGS             := optional
 LOCAL_C_INCLUDES              := $(common_includes) $(kernel_includes)
 LOCAL_SHARED_LIBRARIES        := $(common_libs) libEGL liboverlay libgenlock \
-                                 libqdutils libhardware_legacy
+                                 libqdutils libhardware_legacy libdl libmemalloc
 LOCAL_CFLAGS                  := $(common_flags) -DLOG_TAG=\"hwcomposer\"
 LOCAL_ADDITIONAL_DEPENDENCIES := $(common_deps)
 LOCAL_SRC_FILES               :=  hwc.cpp hwc_video.cpp hwc_utils.cpp \
-                                  hwc_uimirror.cpp hwc_ext_observer.cpp
+                                  hwc_uimirror.cpp hwc_ext_observer.cpp \
+                                  hwc_copybit.cpp
 include $(BUILD_SHARED_LIBRARY)