Moving product specific strings to a separate directory

This allows for easier organization of gradle project

Test: Verified everything builds
Change-Id: Idde32a0ccdf0c6cf0fca7898d7ad770b709fc1f5
diff --git a/packages/SystemUI/Android.bp b/packages/SystemUI/Android.bp
index 0c582c4..2a5bdc7 100644
--- a/packages/SystemUI/Android.bp
+++ b/packages/SystemUI/Android.bp
@@ -37,6 +37,7 @@
         "src/**/I*.aidl",
     ],
     resource_dirs: [
+        "res-product",
         "res-keyguard",
         "res",
     ],
@@ -91,6 +92,7 @@
     manifest: "tests/AndroidManifest.xml",
     resource_dirs: [
         "tests/res",
+        "res-product",
         "res-keyguard",
         "res",
     ],