mtd: spi-nor: fill-in mtd->dev member

mtd: spi-nor: fill-in mtd->dev member

Fill in mtd->dev member with nor->dev.

This can be used by MTD OF partition parser.

Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Pali Rohár <[email protected]>
Reviewed-by: Miquel Raynal <[email protected]>
Tested-by: Patrice Chotard <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>
Cc: Priyanka Jain <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Heiko Schocher <[email protected]>
Cc: Patrick Delaunay <[email protected]>