kirkwood: fix DTS partitions for Pogoplug E02

kirkwood: fix DTS partitions for Pogoplug E02

The Pogoplug E02 was not using the correct partitions
in device tree, but used the ones from upstream and
thus could not boot OpenWrt images.

In contrast, uboot-kirkwood is using the correct
partitions since d3fc4fbd74dc ("uboot-kirkwood: re-add
Pogoplug E02 support").

This patch corrects the partitions in DTS for kernels
4.14, 4.19 and 5.4.

Fixes: 2b0fa00da8fc ("kirkwood: add Pogoplug E02 Kernel support")
Signed-off-by: Alberto Bursi <bobafetthotmail@gmail.com>
Reviewed-by: Pawel Dembicki <paweldembicki@gmail.com>
Reviewed-by: Sungbo Eo <mans0n@gorani.run>
[commit title/message facelift, refresh 4.14 patch]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>