wifi: mt76: mt7925: simpify mt7925_mcu_sta_cmd logic by removing fw_offload

The mt7925 only supports offload firmware making the fw_offload check
redundant. This update simplifies the logic in "mt7925_mcu_sta_cmd"
by removing the unnecessary check for fw_offoad.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20240613030241.5771-48-sean.wang@kernel.org


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