dm: x86: Move link to use driver model for video

Update the configuration to use the new driver. Drop the existing plumbing
code and unused header files.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/chromebook_link_defconfig b/configs/chromebook_link_defconfig
index 8c91bfe..2475222 100644
--- a/configs/chromebook_link_defconfig
+++ b/configs/chromebook_link_defconfig
@@ -57,8 +57,10 @@
 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_11A=y
+CONFIG_VIDEO_IVYBRIDGE_IGD=y
 CONFIG_USE_PRIVATE_LIBGCC=y
 CONFIG_TPM=y