[Settings] Enable kotlin language support

Enable the support of *.kt files.

Bug: 200896893
Test: build pass
Change-Id: I467e4ae3ecd94a74379daa41a8ee8ef4a038d75e
diff --git a/Android.bp b/Android.bp
index 9171012..2c3b2ec 100644
--- a/Android.bp
+++ b/Android.bp
@@ -44,7 +44,7 @@
         "SettingsLib-search-defaults",
     ],
 
-    srcs: ["src/**/*.java"],
+    srcs: ["src/**/*.java", "src/**/*.kt"],
 
     static_libs: [
         "androidx-constraintlayout_constraintlayout",