[U-Boot] rockchip: tinker: configs: use correct mmc instance as boot target device

[Eddie Cai]

We are using wrong mmc instance as boot target device now. below Jaehoon Chung's
patch use mmc alias which correct it. That make tinker board can not find mmc
device. So give it correct mmc device instance.

        commit 02ad33aa3a84821c8d9a6c4f167f143f6248b084
        Author: Jaehoon Chung <jh80.chung at samsung.com>
        Date:   Thu Feb 2 13:41:14 2017 +0900

            mmc: mmc-uclass: use the fixed devnum with alias node

Signed-off-by: Eddie Cai <eddie.cai.linux at gmail.com>
---
 include/configs/tinker_rk3288.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/configs/tinker_rk3288.h b/include/configs/tinker_rk3288.h
index 860eb40..c398e07 100644
--- a/include/configs/tinker_rk3288.h
+++ b/include/configs/tinker_rk3288.h
@@ -13,7 +13,7 @@
 #undef BOOT_TARGET_DEVICES
 
 #define BOOT_TARGET_DEVICES(func) \
-	func(MMC, mmc, 0)
+	func(MMC, mmc, 1)
 
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV 0
-- 
2.7.4