Add support for GigaDevice GD5F1G/2G/4GQ4xA SPI NAND.
Signed-off-by: NChuanhong Guo <gch981213@gmail.com>
Reviewed-by: NFrieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>