Update FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/x86-generic/full-04.09.12.222227/packages/" in /b/cbuild/src/overlays/overlay-x86-generic/prebuilt.conf

Change-Id: I06809e6083626cf6e3953040ed7277e61638d479
diff --git a/overlay-x86-generic/prebuilt.conf b/overlay-x86-generic/prebuilt.conf
index 529a27e..705700f 100644
--- a/overlay-x86-generic/prebuilt.conf
+++ b/overlay-x86-generic/prebuilt.conf
@@ -1 +1 @@
-FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/x86-generic/full-04.09.12.212829/packages/"
+FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/x86-generic/full-04.09.12.222227/packages/"