mtd: rename CONFIG_NAND -> CONFIG_MTD_RAW_NAND

Add more clarity by changing the Kconfig entry name.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
[trini: Re-run migration, update a few more cases]
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
diff --git a/configs/Nintendo_NES_Classic_Edition_defconfig b/configs/Nintendo_NES_Classic_Edition_defconfig
index d95de96..5458875 100644
--- a/configs/Nintendo_NES_Classic_Edition_defconfig
+++ b/configs/Nintendo_NES_Classic_Edition_defconfig
@@ -17,7 +17,7 @@
 CONFIG_DEFAULT_DEVICE_TREE="sun8i-r16-nintendo-nes-classic-edition"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 # CONFIG_MMC is not set
-CONFIG_NAND=y
+CONFIG_MTD_RAW_NAND=y
 CONFIG_SYS_NAND_BLOCK_SIZE=0x20000
 CONFIG_SYS_NAND_PAGE_SIZE=0x800
 CONFIG_SYS_NAND_OOBSIZE=0x40