Make kotlinx_atomicfu available to apexes am: 77f1855d3a am: efe66f7ef9 am: bcbc0e970f am: c6aa263be3

Original change: https://android-review.googlesource.com/c/platform/external/kotlinx.atomicfu/+/1784035

Change-Id: Iea54c133aa832164a70f306a06f516040535ea51
diff --git a/Android.bp b/Android.bp
index 94614fa..23d101a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -32,4 +32,8 @@
         "-Xmulti-platform",
     ],
     visibility: ["//external/kotlinx.coroutines"],
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
 }