hwc: Add support for copybit(C2D) composition

- Add CopybitEngine to hwc_context
- draw the layer on the HWC_FRAMEBUFFER_TARGET using
  copybit(c2d) if it qualifies for C2D composition.
- use fence returned from the copybit during c2d
  composition

Change-Id: I052da015cd031f7abd6411d83d7944c335caeff7
diff --git a/libqdutils/Android.mk b/libqdutils/Android.mk
index ecae273..eb04afb 100644
--- a/libqdutils/Android.mk
+++ b/libqdutils/Android.mk
@@ -9,8 +9,8 @@
 LOCAL_CFLAGS                  := $(common_flags) -DLOG_TAG=\"qdutils\"
 LOCAL_ADDITIONAL_DEPENDENCIES := $(common_deps)
 LOCAL_SRC_FILES               := profiler.cpp mdp_version.cpp \
-                                 idle_invalidator.cpp
-
+                                 idle_invalidator.cpp \
+                                 comptype.cpp
 include $(BUILD_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)