On DBDC devices the first (internal) phy is only capable of usingAcked-by: Felix Fietkau <nbd@xxxxxxxx>
2.4 GHz band, and the 5 GHz band is exposed via a separate phy object,
so avoid the false advertising.
Reported-by: Rani Hod <rani.hod@xxxxxxxxx>
Closes: https://github.com/openwrt/openwrt/pull/12361
Fixes: 7660a1bd0c22 ("mt76: mt7615: register ext_phy if DBDC is detected")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Paul Fertser <fercerpav@xxxxxxxxx>