SF: HWC2 C++ shim

Provides an object-based C++ interface to the HWC 2.0 HAL

Change-Id: Ie1a7bfd2f6faa548bc45da845a4f50f1915b5806
diff --git a/services/surfaceflinger/Android.mk b/services/surfaceflinger/Android.mk
index fe39768..3d71aa8 100644
--- a/services/surfaceflinger/Android.mk
+++ b/services/surfaceflinger/Android.mk
@@ -19,6 +19,7 @@
     SurfaceFlingerConsumer.cpp \
     Transform.cpp \
     DisplayHardware/FramebufferSurface.cpp \
+    DisplayHardware/HWC2.cpp \
     DisplayHardware/HWC2On1Adapter.cpp \
     DisplayHardware/HWComposer.cpp \
     DisplayHardware/PowerHAL.cpp \