spi: Kconfig: Drop redundant CF_SPI definition

CF_SPI kconfig option defined twice with DM_SPI
and non DM_SPI.

Drop the non DM_SPI side kconfig definition.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index dccd5ea..e39d50d 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -384,12 +384,6 @@
 	  Enable MSCC bitbang SPI driver. This driver can be used on
 	  MSCC SOCs.
 
-config CF_SPI
-	bool "ColdFire SPI driver"
-	help
-	  Enable the ColdFire SPI driver. This driver can be used on
-	  some m68k SoCs.
-
 config FSL_ESPI
 	bool "Freescale eSPI driver"
 	imply SPI_FLASH_BAR