[MTD] [NAND] sh_flctl: add support for Renesas SuperH FLCTL

Several Renesas SuperH CPU has FLCTL. The FLCTL support NAND Flash.
This driver support SH7723.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 82815dd..89b4d39 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -407,4 +407,11 @@
 	  This enables the driver for the NAND flash controller on the
 	  MXC processors.
 
+config MTD_NAND_SH_FLCTL
+	tristate "Support for NAND on Renesas SuperH FLCTL"
+	depends on MTD_NAND && SUPERH && CPU_SUBTYPE_SH7723
+	help
+	  Several Renesas SuperH CPU has FLCTL. This option enables support
+	  for NAND Flash using FLCTL. This driver support SH7723.
+
 endif # MTD_NAND