drivers:video:backlight: rt9393 backlight driver
drivers:input:sensors: update the lge akm8973 driver

bkl was removed long ago, so the akm8973 must relay on
its own locking work is based/took over from
https://www.codeaurora.org/gitweb/quic/la/?p=kernel/experimental.git;a=commitdiff;h=1187a9f3f53a7292aa945220ba6415d513e85f43
drivers:input:sensors: update bma150 driver

bkl is gone so bma150 might need some locking
for opening ressources. We try for now
without locking.