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/ZPC1900.h b/include/configs/ZPC1900.h
index b04be76..388c747 100644
--- a/include/configs/ZPC1900.h
+++ b/include/configs/ZPC1900.h
@@ -179,7 +179,7 @@
 #define CFG_FLSIMM_BASE		0xFF000000
 
 #define CFG_FLASH_CFI
-#define CFG_FLASH_CFI_DRIVER
+#define CONFIG_FLASH_CFI_DRIVER
 #define CFG_MAX_FLASH_BANKS	2	/* max num of flash banks	*/
 #define CFG_MAX_FLASH_SECT	32	/* max num of sects on one chip */