Add support for flag change listeners library.

Bug: 203548827
Test: manual
Change-Id: I6f989e89a98c7c6643af762eb0263f81ce584dfa
diff --git a/packages/SystemUI/shared/Android.bp b/packages/SystemUI/shared/Android.bp
index 7cf22a3..25db478 100644
--- a/packages/SystemUI/shared/Android.bp
+++ b/packages/SystemUI/shared/Android.bp
@@ -75,10 +75,10 @@
     static_kotlin_stdlib: false,
     libs: [
         "androidx.concurrent_concurrent-futures",
-        "SystemUI-flags",
     ],
     static_libs: [
         "SystemUI-flag-types",
+        "SystemUI-flags",
     ],
     java_version: "1.8",
     min_sdk_version: "current",