video: coreboot: Save VESA mode for future use

When booting as a coreboot payload, the framebuffer details are
passed from coreboot via configuration tables. We save these
information into vesa_mode_info structure for future use.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

include/vbe.h

@@ -102,6 +102,8 @@ struct vbe_ddc_info {
 #define VESA_SET_MODE		0x4f02
 #define VESA_GET_CUR_MODE	0x4f03
 
+extern struct vbe_mode_info mode_info;
+
 struct graphic_device;
 int vbe_get_video_info(struct graphic_device *gdev);