Use -Werror in system/hardware/interfaces
am: 47040c3486

Change-Id: I496c71b356749e95c253c1068778b8ba91d9f342
diff --git a/wifi/keystore/1.0/Android.bp b/wifi/keystore/1.0/Android.bp
index ab4d027..97d2815 100644
--- a/wifi/keystore/1.0/Android.bp
+++ b/wifi/keystore/1.0/Android.bp
@@ -132,5 +132,6 @@
         "android.system.wifi.keystore@1.0",
         "android.system.wifi.keystore@1.0-adapter-helper",
     ],
+    cflags: ["-Wall", "-Werror"],
     generated_sources: ["android.system.wifi.keystore@1.0-adapter_genc++"],
 }
diff --git a/wifi/keystore/1.0/vts/functional/Android.bp b/wifi/keystore/1.0/vts/functional/Android.bp
index b96c645..cd591ec 100644
--- a/wifi/keystore/1.0/vts/functional/Android.bp
+++ b/wifi/keystore/1.0/vts/functional/Android.bp
@@ -33,5 +33,7 @@
     cflags: [
         "-O0",
         "-g",
+        "-Wall",
+        "-Werror",
     ],
 }