The only supported kernel in the main branch now is version 6.6. It's
time to clean up these useless codes and patches.
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
Brings lots of driver updates and API changes needed for mt76 updates.
Disable iwlwifi and ath11k on 5.15, since backport is too difficult,
and the only remaining targets won't need those drivers.
Signed-off-by: Felix Fietkau <nbd@nbd.name>