video: vesa_fb: Look up VGA device by class instead of id

Per PCI spec, VGA device reports its class as standard 030000h in
its configuration space, so we can use it to determine if we need
run option rom instead of testing the supported vendor/device ids.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

drivers/video/vesa_fb.c

@@ -1,6 +1,5 @@
 /*
- *
- * Vesa frame buffer driver for x86
+ * VESA frame buffer driver
  *
  * Copyright (C) 2014 Google, Inc
  *
@@ -17,16 +16,6 @@
  */
 GraphicDevice ctfb;
 
-/* Devices to allow - only the last one works fully */
-struct pci_device_id vesa_video_ids[] = {
-	{ .vendor = 0x102b, .device = 0x0525 },
-	{ .vendor = 0x1002, .device = 0x5159 },
-	{ .vendor = 0x1002, .device = 0x4752 },
-	{ .vendor = 0x1002, .device = 0x5452 },
-	{ .vendor = 0x8086, .device = 0x0f31 },
-	{},
-};
-
 void *video_hw_init(void)
 {
 	GraphicDevice *gdev = &ctfb;
@@ -36,8 +25,7 @@ void *video_hw_init(void)
 
 	printf("Video: ");
 	if (vbe_get_video_info(gdev)) {
-		/* TODO: Should we look these up by class? */
-		dev = pci_find_devices(vesa_video_ids, 0);
+		dev = pci_find_class(PCI_CLASS_DISPLAY_VGA << 8, 0);
 		if (dev == -1) {
 			printf("no card detected\n");
 			return NULL;