soc/intel/apollolake: Add new Intel HD Graphics Device ID's.

B stepping onwards we have to support two Graphics Device ID.

BUG=chrome-os-partner:55449

Change-Id: I520791ad8573dc5deb6ea1e33e1486f05050438c
Signed-off-by: Abhay Kumar <abhay.kumar@intel.com>
Reviewed-on: https://review.coreboot.org/15767
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
diff --git a/src/soc/intel/apollolake/graphics.c b/src/soc/intel/apollolake/graphics.c
index 3468b39..ba3d5db 100644
--- a/src/soc/intel/apollolake/graphics.c
+++ b/src/soc/intel/apollolake/graphics.c
@@ -110,8 +110,14 @@
 	.enable           = DEVICE_NOOP
 };
 
+static const unsigned short pci_device_ids[] = {
+	PCI_DEVICE_ID_APOLLOLAKE_IGD_HD_505,
+	PCI_DEVICE_ID_APOLLOLAKE_IGD_HD_500,
+	0,
+};
+
 static const struct pci_driver integrated_graphics_driver __pci_driver = {
 	.ops	= &igd_ops,
 	.vendor	= PCI_VENDOR_ID_INTEL,
-	.device	= PCI_DEVICE_ID_APOLLOLAKE_IGD,
+	.devices= pci_device_ids,
 };