exynos4x12: add lights module

Change-Id: Ib37f0b7cc94a5b9607817e3b3bee4814074517a4
diff --git a/exynos4x12.mk b/exynos4x12.mk
index 29cc4d5..ae761c4 100644
--- a/exynos4x12.mk
+++ b/exynos4x12.mk
@@ -17,6 +17,7 @@
 
 include $(TARGET_HAL_PATH)/Android.mk
 include hardware/samsung/exynos/multimedia/Android.mk
+include hardware/samsung/exynos4/exynos4x12/Android.mk
 
 endif
 endif