add light hal module

- initial version
- control lcd backlight
- control red, green, blue

Change-Id: Ibd24dcee3a739111f9eb6a7717b76754875da36e
diff --git a/Android.mk b/Android.mk
index 124c709..0166031 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,7 +1,7 @@
 ifneq ($(filter msm8960,$(TARGET_BOARD_PLATFORM)),)
 
 display-hals := libqcomui
-display-hals += libgralloc libgenlock libcopybit libhwcomposer liboverlay
+display-hals += libgralloc libgenlock libcopybit libhwcomposer liboverlay liblight
 
 include $(call all-named-subdir-makefiles,$(display-hals))