tplink-safeloader: add EAP225 v1 support
Allow creating images compatible with TP-Link's EAP225v1 access point.
The original partition layout is as follows:
partition fs-uboot base 0x00000 size 0x20000
partition partition-table base 0x20000 size 0x02000
partition default-mac base 0x30000 size 0x01000
partition support-list base 0x31000 size 0x00100
partition product-info base 0x31100 size 0x00400
partition soft-version base 0x32000 size 0x00100
partition os-image base 0x40000 size 0x180000
partition file-system base 0x1c0000 size 0xc00000
partition user-config base 0xdc0000 size 0x30000
partition radio base 0xff0000 size 0x10000
For OpenWrt, the os-image and file-system partition are merged into one
firmware partition, to enable dynamic rootfs partition splits.
Signed-off-by: Sander Vanheule <sander@svanheule.net>