davinci: move nand driver to drivers/mtd/nand

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/davinci_dvevm.h b/include/configs/davinci_dvevm.h
index 667c0d8..b43beaa 100644
--- a/include/configs/davinci_dvevm.h
+++ b/include/configs/davinci_dvevm.h
@@ -112,6 +112,7 @@
 /* Flash & Environment */
 /*=====================*/
 #ifdef CONFIG_SYS_USE_NAND
+#define CONFIG_NAND_DAVINCI
 #undef CONFIG_ENV_IS_IN_FLASH
 #define CONFIG_SYS_NO_FLASH
 #define CONFIG_ENV_IS_IN_NAND		/* U-Boot env in NAND Flash  */