wifi: mt76: mt7925: fix incorrect scan probe IE handling for hw_scan

The IEs should be processed and filled into the command tlv separately
according to each band.

Cc: stable@vger.kernel.org
Fixes: c948b5da ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20250616063649.1100503-1-mingyen.hsieh@mediatek.com


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