drm_hwcomposer: Add a new set thread to post bo's

Adds a new set thread to wait on acquire fence, flip the bo,
and wait for it to be presented on screen.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Change-Id: Ia931a7cbe287f4c744068fc80e476f81880bf608
diff --git a/Android.mk b/Android.mk
index 3b14cdd..2eb3212 100644
--- a/Android.mk
+++ b/Android.mk
@@ -20,6 +20,7 @@
 	libdrm \
 	libhardware \
 	liblog \
+	libsync \
 	libutils \
 
 LOCAL_C_INCLUDES := \
@@ -27,6 +28,7 @@
 	external/libdrm \
 	external/libdrm/include/drm \
 	system/core/include/utils \
+	system/core/libsync/include \
 
 LOCAL_CFLAGS :=
 LOCAL_SRC_FILES := hwcomposer.cpp