wifi: mt76: mt7996: Add eht radiotap tlv

This duplicates what the 7925 driver is doing, wireshark seems to
at least mostly decode it as expected.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Link: https://patch.msgid.link/20240909211238.3237111-1-greearb@candelatech.com


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