Include all *.aconfig files under aconfig directory

Forward fix for  https://googleplex-android-review.git.corp.google.com/c/platform/vendor/unbundled_google/packages/NexusLauncher/+/24579326/4/build.gradle

Bug: 294913042
Test: Local studio build
Flag: NA
Change-Id: Ib16469096c92eff4b50167e58fe5132e5467fdde
diff --git a/aconfig/Android.bp b/aconfig/Android.bp
index 4ecc282..9ada485 100644
--- a/aconfig/Android.bp
+++ b/aconfig/Android.bp
@@ -20,7 +20,7 @@
 aconfig_declarations {
     name: "com_android_launcher3_flags",
     package: "com.android.launcher3",
-    srcs: ["launcher.aconfig"],
+    srcs: ["**/*.aconfig"],
 }
 
 java_aconfig_library {