meta-google: busybox: Add watchdog back

The initrd needs to be able to pet the watchdog prior to starting an
update. If this doesn't happen, we may trip the watchdog before writing
out the entire update payload.

Change-Id: I9974263585d2143e8bebb2a1522133d53e911eb7
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-core/busybox/files/gbmc.cfg b/meta-google/recipes-core/busybox/files/gbmc.cfg
index c76e4f0..9b053c7 100644
--- a/meta-google/recipes-core/busybox/files/gbmc.cfg
+++ b/meta-google/recipes-core/busybox/files/gbmc.cfg
@@ -42,7 +42,6 @@
 CONFIG_MKSWAP=n
 CONFIG_SWAPON=n
 CONFIG_SWAPOFF=n
-CONFIG_WATCHDOG=n
 CONFIG_IFCONFIG=n
 CONFIG_IFUP=n
 CONFIG_IFDOWN=n