Adjust the memory remap range according to the mt7621 programming
guide to ensure that the driver can correctly access the peripheral
registers.
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/22467
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>