linux-imx

dt-bindings: Add bindings for SPI NAND devices

Add bindings for SPI NAND chips.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>