When upgrading a TP-Link Archer C5 v1 from ar71xx to ath79,
the 5ghz radio stops working because the device path changed.
Same has been done for the Archer C7 before:
commit e19506f206 ("ath79: migrate Archer C7 5GHz radio device paths")
Signed-off-by: Jan-Niklas Burfeind <git@aiyionpri.me>
(cherry picked from commit c6eb63d48f)