ui/sf: Add support for exynos HDMI

Change-Id: I27b34e95c04750e3dd321a2183b6cc1d89f29b5d

Conflicts:
	libs/ui/Android.mk
	services/surfaceflinger/Android.mk
	services/surfaceflinger/SurfaceFlinger.cpp
	services/surfaceflinger/SurfaceFlinger.h
sensordevice: Dummy ALS: Solve fortified libc warning

convert sprint to snprintf, the size of the writes is always known

Change-Id: I53ee36b67544ac25de7e5c05ce90b6817c8a9c92