Add migration for all ar71xx device path as well as previously
incorrect ath79 path.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
(cherry picked from commit d08b5bb344792bb82ccbcf3a0a8d25c79e72f4fe)
Tested-by: Lech Perczak <lech.perczak@gmail.com> [TP-Link TL-WDR4300 v1]