display: Enable clang for all display modules

Change-Id: I71e3fa3f7d44253b8e01d1eafe086b1898d65a8e
diff --git a/libqdutils/Android.mk b/libqdutils/Android.mk
index 475fa3b..f56f774 100644
--- a/libqdutils/Android.mk
+++ b/libqdutils/Android.mk
@@ -6,7 +6,8 @@
 LOCAL_MODULE_TAGS             := optional
 LOCAL_SHARED_LIBRARIES        := $(common_libs) libui libbinder libqservice
 LOCAL_C_INCLUDES              := $(common_includes) $(kernel_includes)
-LOCAL_CFLAGS                  := $(common_flags) -DLOG_TAG=\"qdutils\"
+LOCAL_CFLAGS                  := $(common_flags) -DLOG_TAG=\"qdutils\" -Wno-sign-conversion
+LOCAL_CLANG                   := true
 LOCAL_ADDITIONAL_DEPENDENCIES := $(common_deps)
 LOCAL_COPY_HEADERS_TO         := $(common_header_export_path)
 LOCAL_COPY_HEADERS            := display_config.h
@@ -23,8 +24,9 @@
 LOCAL_C_INCLUDES                := $(common_includes)
 LOCAL_ADDITIONAL_DEPENDENCIES   := $(common_deps)
 LOCAL_SRC_FILES                 := qdMetaData.cpp
-LOCAL_CFLAGS                    := $(common_flags)
+LOCAL_CFLAGS                    := $(common_flags) -Wno-sign-conversion
 LOCAL_CFLAGS                    += -DLOG_TAG=\"DisplayMetaData\"
+LOCAL_CLANG                     := true
 LOCAL_MODULE_TAGS               := optional
 LOCAL_MODULE                    := libqdMetaData
 include $(BUILD_SHARED_LIBRARY)