MycroftOS: Buildroot: Change script to startup script

- Script worked manually on the CLI so converting it to init.d script.

buildroot-external/rootfs-overlay/etc/init.d/S00resize_sdcard

@@ -1,16 +1,25 @@
-#!/bin/bash
+#!/bin/sh
-set -e
+#
+# Resize SD card
+#
 
-echo "Resize data partition ..."
+start() {
-parted /dev/mmcblk0 unit % resizepart 2 yes 100%
+	printf "Resize data partition ..."
-echo "Resize partition done"
+	parted /dev/mmcblk0 unit % resizepart 2 yes 100% &&
+	partprobe /dev/mmcblk0 &&
+	sync &&
+	resize2fs /dev/mmcblk0p2 &&
+	chmod -x /etc/init.d/S00resize_sdcard &&
+	echo "[OK]"
+}
 
-partprobe /dev/mmcblk0
+case "$1" in
-sync
+  start)
-
+        start
-echo "Resize data filesystem ..."
+        ;;
-resize2fs /dev/mmcblk0p2
+  *)
-echo "Resize filesystem done"
+        echo "Usage: $0 {start}"
-
+        exit 1
-chmod -x /etc/init.d/S00resize_sdcard
+esac
 
+exit $?