rockchip: evb_rk3288: Add console settings

Add console settings like stdin, stdout and stderr as
usbkbd and vidconsole respectively for evb-rk3288 targets.

This would certainly help to detect the attached video
devices (like HDMI) and print the console messages on display.
Signed-off-by: NSuniel Mahesh <sunil@amarulasolutions.com>
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Reviewed-by: NKever Yang <kever.yang@rock-chips.com>

include/configs/evb_rk3288.h

@@ -6,7 +6,11 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-#define ROCKCHIP_DEVICE_SETTINGS
+#define ROCKCHIP_DEVICE_SETTINGS \
+		"stdin=serial,usbkbd\0" \
+		"stdout=serial,vidconsole\0" \
+		"stderr=serial,vidconsole\0"
+
 #include <configs/rk3288_common.h>
 
 #define CONFIG_SYS_MMC_ENV_DEV 0