[script][flash_all] Add wipe option

scripts/flash_all

@@ -1,5 +1,6 @@
 #!/bin/bash
 haveSerial=false
+shouldWipe=false
 serial=""
 used_serial=""
 forbidden_serials="b06474cb"
@@ -81,12 +82,15 @@ function check_presence {
 	fi
 }
 
-while getopts ":s:" opt; do
+while getopts ":s:w" opt; do
 	case $opt in
 		s) echo "Using Serial $OPTARG"
 		serial=$OPTARG
 		haveSerial=true
 		;;
+		w)
+		shouldWipe=true
+		;;
 		\?)
 		echo "Invalid option: -$OPTARG" >&2
 		usage
@@ -120,6 +124,9 @@ else
 	for img in $imgList; do
 		imageName=$(basename $img)
 		imageName=${imageName%.img}
-		echo "fastboot -s $used_serial -S 256M flash ${imageName} $img;"
+		fastboot -s $used_serial -S 256M flash ${imageName} $img;
+		if $shouldWipe; then
+			fastboot -s $used_serial -w
+		fi
 	done && fastboot reboot
 fi