Update FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/x86-generic/full-31.01.12.102548/packages/" in /b/cbuild/src/overlays/overlay-x86-generic/prebuilt.conf

Change-Id: I8f7fd2bbbb6007bc39a21c14796e33fddd1a2deb
diff --git a/overlay-x86-generic/prebuilt.conf b/overlay-x86-generic/prebuilt.conf
index f15a2e1..2b3e140 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-31.01.12.091635/packages/"
+FULL_BINHOST="https://commondatastorage.googleapis.com/chromeos-prebuilt/board/x86-generic/full-31.01.12.102548/packages/"