mtd: spinand: Add initial support for Micron MT29F2G01ABAGD

Add a basic driver for Micron SPI NANDs. Only one device is supported
right now, but the driver will be extended to support more devices
afterwards.

Signed-off-by: Peter Pan <peterpandong@micron.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
index ad59fc0..5302d38 100644
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -200,6 +200,9 @@
 	const struct spinand_manufacturer_ops *ops;
 };
 
+/* SPI NAND manufacturers */
+extern const struct spinand_manufacturer micron_spinand_manufacturer;
+
 /**
  * struct spinand_op_variants - SPI NAND operation variants
  * @ops: the list of variants for a given operation