vbe: Make vbe_setup_video_priv() public

vbe_setup_video_priv() might be useful to other drivers.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pci/pci_rom.c b/drivers/pci/pci_rom.c
index 5746c3d..cd083f7 100644
--- a/drivers/pci/pci_rom.c
+++ b/drivers/pci/pci_rom.c
@@ -351,9 +351,9 @@
 }
 
 #ifdef CONFIG_DM_VIDEO
-static int vbe_setup_video_priv(struct vesa_mode_info *vesa,
-				struct video_priv *uc_priv,
-				struct video_uc_platdata *plat)
+int vbe_setup_video_priv(struct vesa_mode_info *vesa,
+			 struct video_priv *uc_priv,
+			 struct video_uc_platdata *plat)
 {
 	if (!vesa->x_resolution)
 		return -ENXIO;