Call firmware wipe script during factory wipe if it exists

clobber-state

Index: clobber-state
diff --git a/clobber-state b/clobber-state
index 8015a227792b307b9d5d839e3dc8fc5b86bec190..b6252247b0f2ead8dfdbce0db6b451c31c1b4c62 100755
--- a/clobber-state
+++ b/clobber-state
@@ -101,6 +101,11 @@ echo 3 > /proc/sys/vm/drop_caches
 # Do any board specific wiping here.
 # board_factory_wipe.sh will be installed by the board overlay if necessary.
 if [ "$FACTORY_WIPE" = "factory" ]; then
+  FIRMWARE_WIPE='/usr/sbin/firmware-factory-wipe'
+  if [ -x "${FIRMWARE_WIPE}" ]; then
+    ${FIRMWARE_WIPE}
+  fi
+
   BOARD_WIPE=/usr/sbin/board_factory_wipe.sh
   if [ -x "${BOARD_WIPE}" ]; then
     ${BOARD_WIPE}