Manifest for Android 12.0.0 Release 2 (SP1A.210812.016)

Change-Id: I81978d8cbb19e153096d99fe49366b6833be5b85

default.xml

@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/android-12.0.0_r1"
+  <default revision="refs/tags/android-12.0.0_r2"
            remote="aosp"
            sync-j="4" />