Change references from rpi3-* to rpi-*

rpi-resizerootfs

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+roottmp=$(lsblk -l -o NAME,MOUNTPOINT | grep '/$')
+rootpart=/dev/${roottmp%% */}
+rootdev=${rootpart%2}
+rootdev=${rootdev%p}
+
+flock $rootdev sfdisk -f $rootdev -N 2 <<EOF
+,+
+EOF
+
+sleep 5
+
+udevadm settle
+
+sleep 5
+
+flock $rootdev partprobe $rootdev
+
+mount -o remount,rw $rootpart
+
+resize2fs $rootpart
+
+exit 0