Update FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/arm-generic/full-09.06.12.021641/packages/" in /b/cbuild/src/overlays/overlay-arm-generic/prebuilt.conf

Change-Id: Id197d92bab0551bfda24e440d5f9753b50dcc84a
diff --git a/overlay-arm-generic/prebuilt.conf b/overlay-arm-generic/prebuilt.conf
index 1b22c8e..f1fd927 100644
--- a/overlay-arm-generic/prebuilt.conf
+++ b/overlay-arm-generic/prebuilt.conf
@@ -1 +1 @@
-FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/arm-generic/full-09.06.12.014051/packages/"
+FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/arm-generic/full-09.06.12.021641/packages/"