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/broadcom_bcm968380gerg.h b/include/configs/broadcom_bcm968380gerg.h
index a1c54cf..8d572f6 100644
--- a/include/configs/broadcom_bcm968380gerg.h
+++ b/include/configs/broadcom_bcm968380gerg.h
@@ -6,8 +6,8 @@
 #include <configs/bmips_common.h>
 #include <configs/bmips_bcm6838.h>
 
-#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 */