Revert "Revert "Make build warnings be errors""

This reverts commit 984b4f2db2f5969afff6420739f6d785f4a14bf3.

Change-Id: I4d0f420a063c611afe5b5c9fa809e34799f66ea1
diff --git a/soundtrigger/Android.mk b/soundtrigger/Android.mk
index d91c4c2..c794cc1 100644
--- a/soundtrigger/Android.mk
+++ b/soundtrigger/Android.mk
@@ -35,4 +35,6 @@
 
 LOCAL_MODULE:= libsoundtrigger
 
+LOCAL_CFLAGS := -Werror -Wall
+
 include $(BUILD_SHARED_LIBRARY)