mtd: rawnand: denali: configure SPARE_AREA_SKIP_BYTES only for denali_spl

This CONFIG option is only used in denali_spl.c

Move it close to SPL_NAND_DENALI, and make it depend on SPL_NAND_DENALI.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index c4d9d31..06b2ff9 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -121,15 +121,6 @@
 	  Enable the driver for NAND flash on platforms using a Denali NAND
 	  controller as a DT device.
 
-config NAND_DENALI_SPARE_AREA_SKIP_BYTES
-	int "Number of bytes skipped in OOB area"
-	depends on NAND_DENALI
-	range 0 63
-	help
-	  This option specifies the number of bytes to skip from the beginning
-	  of OOB area before last ECC sector data starts.  This is potentially
-	  used to preserve the bad block marker in the OOB area.
-
 config NAND_LPC32XX_SLC
 	bool "Support LPC32XX_SLC controller"
 	help
@@ -404,6 +395,15 @@
 	  This is a small implementation of the Denali NAND controller
 	  for use on SPL.
 
+config NAND_DENALI_SPARE_AREA_SKIP_BYTES
+	int "Number of bytes skipped in OOB area"
+	depends on SPL_NAND_DENALI
+	range 0 63
+	help
+	  This option specifies the number of bytes to skip from the beginning
+	  of OOB area before last ECC sector data starts.  This is potentially
+	  used to preserve the bad block marker in the OOB area.
+
 config SPL_NAND_SIMPLE
 	bool "Use simple SPL NAND driver"
 	depends on !SPL_NAND_AM33XX_BCH