linux-phytec-fsl

MLK-14388 mtd: gpmi: remove direct mtd->priv accesses

mtd->priv is no longer pointing to the struct nand_chip it is attached
to.  Replace those accesses by mtd_to_nand() calls.

Signed-off-by: Octavian Purdila <octavian.purdila@nxp.com>