rk3288: tinker: Enable HDMI output

Enable HDMI output for Tinker RK3288 board.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/tinker-rk3288_defconfig b/configs/tinker-rk3288_defconfig
index fb7d106..be636c0 100644
--- a/configs/tinker-rk3288_defconfig
+++ b/configs/tinker-rk3288_defconfig
@@ -83,3 +83,9 @@
 CONFIG_USB_ETHER_SMSC95XX=y
 CONFIG_CMD_DHRYSTONE=y
 CONFIG_ERRNO_STR=y
+CONFIG_DM_VIDEO=y
+CONFIG_VIDEO_BPP16=y
+CONFIG_VIDEO_BPP32=y
+CONFIG_DISPLAY=y
+CONFIG_VIDEO_ROCKCHIP=y
+CONFIG_DISPLAY_ROCKCHIP_HDMI=y