Don't build lights module if vendor supplies it

Change-Id: I63589281961e1120e7536798df6d78b8a7af4304
diff --git a/Android.mk b/Android.mk
index e609933..0b7047a 100644
--- a/Android.mk
+++ b/Android.mk
@@ -5,12 +5,16 @@
 display-hals := include $(sdm-libs)/utils $(sdm-libs)/core libdebug
 
 ifneq ($(TARGET_IS_HEADLESS), true)
-    display-hals += libcopybit liblight libmemtrack hdmi_cec \
+    display-hals += libcopybit libmemtrack hdmi_cec \
                     $(sdm-libs)/hwc2 gpu_tonemapper libdrmutils
 endif
 
 display-hals += gralloc
 
+ifneq ($(TARGET_PROVIDES_LIBLIGHT),true)
+    display-hals += liblight
+endif
+
 ifeq ($(call is-vendor-board-platform,QCOM),true)
     include $(call all-named-subdir-makefiles,$(display-hals))
 else