Snap for 4386413 from 5b7ca2e7bce00d2fe7b149203341d92ead575f76 to pi-release

Change-Id: Ib8636dc7906c4eadb33d520dc21ce5817f7932f1
diff --git a/Android.bp b/Android.bp
index b09fd43..33d3b75 100644
--- a/Android.bp
+++ b/Android.bp
@@ -16,8 +16,11 @@
 
     cflags: [
         "-std=c99",
+        "-Wall",
+        "-Werror",
         "-Wno-missing-field-initializers",
         "-Wno-sign-compare",
+        "-Wno-unused-function",
         "-Wno-unused-parameter",
     ],
 }