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/M5271EVB.h b/include/configs/M5271EVB.h
index a6fac4c..12f9783 100644
--- a/include/configs/M5271EVB.h
+++ b/include/configs/M5271EVB.h
@@ -210,7 +210,7 @@
 #define CFG_FLASH_ERASE_TOUT	1000
 
 #define CFG_FLASH_CFI		1
-#define CFG_FLASH_CFI_DRIVER	1
+#define CONFIG_FLASH_CFI_DRIVER	1
 #define CFG_FLASH_SIZE		0x200000
 
 /* Cache Configuration */