Use -Wno-date-time to allow __DATE__/__TIME__

This is a testing binary, so using __DATE__/__TIME__ is fine as long as
it's not installed by default.

Bug: 24204119
Change-Id: I0a3540fa5ee6ed3d6765c6d315912e3dcb7b8830
diff --git a/Android.mk b/Android.mk
index f436453..8bcbc4f 100644
--- a/Android.mk
+++ b/Android.mk
@@ -727,7 +727,8 @@
 		libdl
 
 LOCAL_CFLAGS += \
-	$(deqp_compile_flags)
+	$(deqp_compile_flags) \
+	-Wno-date-time
 
 LOCAL_SDK_VERSION := 9
 LOCAL_CPPFLAGS += -Wno-non-virtual-dtor