x86: Convert to use DM VESA video driver

At present only chromebook boards are converted to DM video. Other
x86 boards are still using the legacy cfb_console driver. This
switches to use DM version drivers.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/qemu-x86_defconfig b/configs/qemu-x86_defconfig
index 769adf6..4cf0866 100644
--- a/configs/qemu-x86_defconfig
+++ b/configs/qemu-x86_defconfig
@@ -44,6 +44,7 @@
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_STORAGE=y
+CONFIG_DM_VIDEO=y
 CONFIG_VIDEO_VESA=y
 CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
 CONFIG_FRAMEBUFFER_VESA_MODE_111=y