Since we hijacked the OpenBSD PCI vendor ID, this diff should probably
not be upstreamed.

Index: src/hw/pci_ids.h
--- src/hw/pci_ids.h.orig
+++ src/hw/pci_ids.h
@@ -147,6 +147,9 @@
 #define PCI_DEVICE_ID_BERKOM_A4T		0xffa4
 #define PCI_DEVICE_ID_BERKOM_SCITEL_QUADRO	0xffa8
 
+#define PCI_VENDOR_ID_OPENBSD		0x0b5d
+#define PCI_DEVICE_ID_OPENBSD_PCHB	0x0666
+
 #define PCI_VENDOR_ID_COMPAQ		0x0e11
 #define PCI_DEVICE_ID_COMPAQ_TOKENRING	0x0508
 #define PCI_DEVICE_ID_COMPAQ_TACHYON	0xa0fc
