display: Enable clang for all display modules

Change-Id: I71e3fa3f7d44253b8e01d1eafe086b1898d65a8e
diff --git a/libmemtrack/Android.mk b/libmemtrack/Android.mk
index 3ed37a3..4e7a09f 100644
--- a/libmemtrack/Android.mk
+++ b/libmemtrack/Android.mk
@@ -20,7 +20,8 @@
 
 LOCAL_MODULE_RELATIVE_PATH := hw
 LOCAL_C_INCLUDES += hardware/libhardware/include
-LOCAL_CFAGS := -Wconversion -Wall -Werror
+LOCAL_CFLAGS := -Wconversion -Wall -Werror -Wno-sign-conversion
+LOCAL_CLANG  := true
 LOCAL_SHARED_LIBRARIES := liblog
 LOCAL_SRC_FILES := memtrack_msm.c kgsl.c
 LOCAL_MODULE := memtrack.$(TARGET_BOARD_PLATFORM)