linux-phytec-fsl

IMX7FLY-10 dts: imx7-phycore-som: nand: update pad ctl

Configure drive strength to X2 for all NAND signals except
for NAND_WE_B, which is set to X4. Also set NAND_ALE to
Slow Slew Rate.

Signed-off-by: Anna Horstmann <ahorstmann@phytec.com>
(cherry picked from commit e6dd1b0dc02719f8dc78546a96105496fc5547c0)