wifi: mt76: mt7921: fix wrong UNII-4 freq range check for the channel usage

The check should start from 5845 to 5925, which includes
channels 169, 173, and 177.

Fixes: 09382d8f ("wifi: mt76: mt7921: update the channel usage when the regd domain changed")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20240806013408.17874-1-mingyen.hsieh@mediatek.com


Signed-off-by: Felix Fietkau <nbd@nbd.name>