ARM: rmobile: blanche: Disable CONFIG_CMD_SF / CONFIG_CMD_SPI

The config header for this platform disables both CMD_SF and CMD_SPI and
the defconfig leaves them enabled.  Disable them from the defconfig and
enable them in the header.

Cc: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masakazu Mochizuki <masakazu.mochizuki.wd@hitachi.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/blanche_defconfig b/configs/blanche_defconfig
index 137acce..641b779 100644
--- a/configs/blanche_defconfig
+++ b/configs/blanche_defconfig
@@ -24,7 +24,7 @@
 CONFIG_CMD_MMC=y
 CONFIG_CMD_PCI=y
 CONFIG_CMD_SDRAM=y
-CONFIG_CMD_SPI=y
+# CONFIG_CMD_SF is not set
 CONFIG_CMD_USB=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_MII=y