Adding new spi-nand device support (Belkin RT3200 and Linksys E8450)

Hi ... I see that you have managed to completely replace the stock boot loader for the E8450. I was wondering if the same can be done for the E5600 . I have a working build with excellent work from this thread Adding OpenWrt support for Linksys E5600 . The E5600 allows two firmwares (probably as a failsafe) but the free space ends up being very little. The chip is MT7621 based unlike the on here and the flash layout looks like this

root@HomeNetwork:~# cat /proc/mtd

dev: size erasesize name

mtd0: 00080000 00020000 "boot"

mtd1: 00040000 00020000 "u_env"

mtd2: 00040000 00020000 "factory"

mtd3: 00040000 00020000 "s_env"

mtd4: 00040000 00020000 "devinfo"

mtd5: 00400000 00020000 "kernel"

mtd6: 01a00000 00020000 "ubi"

mtd7: 01e00000 00020000 "alt_firmware"

mtd8: 04200000 00020000 "gdata"

I was wondering if its possible to achieve the same for the E5600 and possibly free up more space.