Convert CONFIG_NAND_KMETER1 et al to Kconfig

This converts the following to Kconfig:
   CONFIG_NAND_ECC_BCH
   CONFIG_NAND_KIRKWOOD
   CONFIG_NAND_KMETER1

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index eb37b62..338a356 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -225,6 +225,19 @@
 	help
 	  Enable the Freescale Integrated Flash Controller NAND driver.
 
+config NAND_KIRKWOOD
+	bool "Support for Kirkwood NAND controller"
+	depends on ARCH_KIRKWOOD
+	default y
+
+config NAND_ECC_BCH
+	bool
+
+config NAND_KMETER1
+	bool "Support KMETER1 NAND controller"
+	depends on VENDOR_KM
+	select NAND_ECC_BCH
+
 config NAND_LPC32XX_MLC
 	bool "Support LPC32XX_MLC controller"
 	select SYS_NAND_SELF_INIT