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>
diff --git a/drivers/pci/pci_rom.c b/drivers/pci/pci_rom.c
index 26db3ca..b9a3990 100644
--- a/drivers/pci/pci_rom.c
+++ b/drivers/pci/pci_rom.c
@@ -187,7 +187,7 @@
 	return 0;
 }
 
-static struct vbe_mode_info mode_info;
+struct vbe_mode_info mode_info;
 
 int vbe_get_video_info(struct graphic_device *gdev)
 {