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/include/configs/comtrend_vr3032u.h b/include/configs/comtrend_vr3032u.h
index 3c3c4df..c4c7029 100644
--- a/include/configs/comtrend_vr3032u.h
+++ b/include/configs/comtrend_vr3032u.h
@@ -8,8 +8,8 @@
 
 #define CONFIG_REMAKE_ELF
 
-#ifdef CONFIG_NAND
+#ifdef CONFIG_MTD_RAW_NAND
 #define CONFIG_SYS_MAX_NAND_DEVICE	1
 #define CONFIG_SYS_NAND_SELF_INIT
 #define CONFIG_SYS_NAND_ONFI_DETECTION
-#endif /* CONFIG_NAND */
+#endif /* CONFIG_MTD_RAW_NAND */