display: Fix warnings

Treat warnings as errors again

Change-Id: Ibd7f484d31ad420b85e82fd5183d70bf7dce4bfa
diff --git a/libmemtrack/Android.mk b/libmemtrack/Android.mk
index 2fda0b7..3ed37a3 100644
--- a/libmemtrack/Android.mk
+++ b/libmemtrack/Android.mk
@@ -20,6 +20,7 @@
 
 LOCAL_MODULE_RELATIVE_PATH := hw
 LOCAL_C_INCLUDES += hardware/libhardware/include
+LOCAL_CFAGS := -Wconversion -Wall -Werror
 LOCAL_SHARED_LIBRARIES := liblog
 LOCAL_SRC_FILES := memtrack_msm.c kgsl.c
 LOCAL_MODULE := memtrack.$(TARGET_BOARD_PLATFORM)