drivers/mtd: Move conditional compilation to Makefile

rename CFG_FLASH_CFI_DRIVER to CONFIG_FLASH_CFI_DRIVER

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/kilauea.h b/include/configs/kilauea.h
index 9c1a3a4..d94f967 100644
--- a/include/configs/kilauea.h
+++ b/include/configs/kilauea.h
@@ -131,7 +131,7 @@
  * FLASH related
  *----------------------------------------------------------------------*/
 #define CFG_FLASH_CFI			/* The flash is CFI compatible	*/
-#define CFG_FLASH_CFI_DRIVER		/* Use common CFI driver	*/
+#define CONFIG_FLASH_CFI_DRIVER		/* Use common CFI driver	*/
 
 #define CFG_FLASH_BANKS_LIST    {CFG_FLASH_BASE}
 #define CFG_MAX_FLASH_BANKS	1	/* max number of memory banks		*/