rpi: Auto grow the actual /home partition.

With the current service, only the extended partition is expanded to fill
the space. This also extends partition 6 which is the current /home
and the last partition on the disk.

Signed-off-by: Drew Moseley <drew@moseleynet.net>

meta-rauc-raspberrypi/recipes-core/rauc/files/rauc-grow-data-partition.service

@@ -7,6 +7,7 @@ Before=home.mount
 Type=oneshot
 RemainAfterExit=yes
 ExecStart=/usr/sbin/parted --script /dev/mmcblk0 resizepart 4 100%
+ExecStart=/usr/sbin/parted --script /dev/mmcblk0 resizepart 6 100%
 
 [Install]
 WantedBy=home.mount