nds32: board: Support ftsdc010 DM.

AG101P/AE3XX enable ftsdc010 dm flow.

Signed-off-by: Rick Chen <rick@andestech.com>
diff --git a/board/AndesTech/adp-ag101p/adp-ag101p.c b/board/AndesTech/adp-ag101p/adp-ag101p.c
index 79608f4..f918c63 100644
--- a/board/AndesTech/adp-ag101p/adp-ag101p.c
+++ b/board/AndesTech/adp-ag101p/adp-ag101p.c
@@ -85,8 +85,10 @@
 
 int board_mmc_init(bd_t *bis)
 {
+#ifndef CONFIG_DM_MMC
 #ifdef CONFIG_FTSDC010
 	ftsdc010_mmc_init(0);
 #endif
+#endif
 	return 0;
 }