Commit 718e97c5c8 ("ramips: mt7530 swconfig: fix race condition in
register access") backports a fix which depends on unlocked MMD
accessors, however these were not yet included in Kernel 4.14 and they
were not backported yet.
Fixes commit 718e97c5c8 ("ramips: mt7530 swconfig: fix race condition in register access")
Signed-off-by: David Bauer <mail@david-bauer.net>