imx: imx8mn_evk: add board_mmc_get_env_dev

Add board_mmc_get_env_dev, otherwise,
Loading Environment from MMC...
MMC Device 0 not found
*** Warning - No MMC card found, using default environment

Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/board/freescale/imx8mn_evk/imx8mn_evk.c b/board/freescale/imx8mn_evk/imx8mn_evk.c
index b22a2a6..4f33c0e 100644 (file)
--- a/board/freescale/imx8mn_evk/imx8mn_evk.c
+++ b/board/freescale/imx8mn_evk/imx8mn_evk.c
@@ -19,6 +19,11 @@ int board_init(void)
        return 0;
 }
 
+int board_mmc_get_env_dev(int devno)
+{
+       return devno;
+}
+
 int board_late_init(void)
 {
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG