Apply code from commits 9e1bc27e6d
(ar71xx: Fix UBIFS work on Mikrotik RB95x devices) and
665bb27499 (ar71xx: fix invalid pointer
dereference in rb95x_nand_scan_fixup()) to RB92x devices too.
Signed-off-by: Roger Pueyo Centelles <roger.pueyo@guifi.net>