apalis_imx6: fix video stdout in default environment

After migration to DM 'vga' name is not longer supported,
change it to 'vidconsole' in the default environment.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Igor Opaniuk <igor.opaniuk@toradex.com>
diff --git a/include/configs/apalis_imx6.h b/include/configs/apalis_imx6.h
index d5a0625..6fc7c39 100644
--- a/include/configs/apalis_imx6.h
+++ b/include/configs/apalis_imx6.h
@@ -169,7 +169,8 @@
 	BOOTENV \
 	"bootcmd=setenv fdtfile ${fdt_file}; run distro_bootcmd ; " \
 		"usb start ; " \
-		"setenv stdout serial,vga ; setenv stdin serial,usbkbd\0" \
+		"setenv stdout serial,vidconsole; " \
+		"setenv stdin serial,usbkbd\0" \
 	"boot_file=zImage\0" \
 	"console=ttymxc0\0" \
 	"defargs=enable_wait_mode=off vmalloc=400M\0" \