This reverts commit 79af0593a3.
A hack adjusting fw_devlink value was added to workaround issue with
probing device drivers caused by of_platform_populate(). With upstream
mtd commit (the one adding OF_POPULATED) backported there is no need for
that hack anymore.
Ref: 3eebb91317 ("kernel: backport proper fix for mtd preventing devices probing")
Ref: #10232
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>