mmc: fsl_esdhc_imx: Fix error message

Add missing newline character and also add the return code of
regulator_set_value() to the output.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
diff --git a/drivers/mmc/fsl_esdhc_imx.c b/drivers/mmc/fsl_esdhc_imx.c
index a9b8d7d..03de7dc 100644
--- a/drivers/mmc/fsl_esdhc_imx.c
+++ b/drivers/mmc/fsl_esdhc_imx.c
@@ -766,7 +766,7 @@
 			ret = regulator_set_value(priv->vqmmc_dev,
 						  3300000);
 			if (ret) {
-				printf("Setting to 3.3V error");
+				printf("Setting to 3.3V error: %d\n", ret);
 				return -EIO;
 			}
 			mdelay(5);
@@ -784,7 +784,7 @@
 			ret = regulator_set_value(priv->vqmmc_dev,
 						  1800000);
 			if (ret) {
-				printf("Setting to 1.8V error");
+				printf("Setting to 1.8V error: %d\n", ret);
 				return -EIO;
 			}
 		}