Use pci_{vendor,device}_id instead of just pci_{vendor,device}, to avoid

conflict with pci_device function.

src/Makefile.housekeeping

 # TGT_LD_PREFIX  : symbols to require in order to drag in the relevant prefix
 #		   (e.g. "obj_zpciprefix")
 # TGT_LD_IDS :     symbols to define in order to fill in ID structures in the
-#		   ROM header (e.g. "pci_vendor=0x1186 pci_device=0x1300")
+#		   ROM header (e.g."pci_vendor_id=0x1186 pci_device_id=0x1300")
 #
 TGT_LD_DRIVERS	= $(subst -,_,$(patsubst %,obj_%,$(TGT_DRIVERS)))
 TGT_LD_PREFIX	= obj_$(subst rom,$(TGT_ROM_TYPE),$(TGT_PREFIX))prefix
-TGT_LD_IDS	= $(if $(TGT_PCI_VENDOR),pci_vendor=$(TGT_PCI_VENDOR)) \
-		  $(if $(TGT_PCI_DEVICE),pci_device=$(TGT_PCI_DEVICE))
+TGT_LD_IDS	= $(if $(TGT_PCI_VENDOR),pci_vendor_id=$(TGT_PCI_VENDOR)) \
+		  $(if $(TGT_PCI_DEVICE),pci_device_id=$(TGT_PCI_DEVICE))
 
 # Calculate linker flags based on link-time options for the current
 # target type (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the