Snap for 4386413 from 39d92f3eb638b5e389d597359966ee9c5f5bc628 to pi-release

Change-Id: If2b00a904c524a8555819038ebc89220e1107954
diff --git a/Android.bp b/Android.bp
index b865eec..064b0c8 100644
--- a/Android.bp
+++ b/Android.bp
@@ -25,6 +25,10 @@
         "liblog",
         "libnetd_client",
     ],
-    cflags: ["-DANDROID_CHANGES"],
+    cflags: [
+        "-DANDROID_CHANGES",
+        "-Wall",
+        "-Werror",
+    ],
     init_rc: ["mtpd.rc"],
 }