PCI: Use phys_addr_t for physical ROM address

Use phys_addr_t rather than "void *" for physical memory address.
This removes casts and fixes a "cast from pointer to integer of different
size" warning on ppc44x_defconfig.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

arch/x86/pci/common.c

@@ -628,8 +628,8 @@ int pcibios_add_device(struct pci_dev *dev)
 			    (PCI_FUNC(dev->devfn) == rom->function) &&
 			    (dev->vendor == rom->vendor) &&
 			    (dev->device == rom->devid)) {
-				dev->rom = (void *)(unsigned long)(pa_data +
-				      offsetof(struct pci_setup_rom, romdata));
+				dev->rom = pa_data +
+				      offsetof(struct pci_setup_rom, romdata);
 				dev->romlen = rom->pcilen;
 			}
 		}

drivers/pci/rom.c

@@ -122,7 +122,7 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size)
 	 */
 	if (pdev->rom && pdev->romlen) {
 		*size = pdev->romlen;
-		return phys_to_virt((phys_addr_t)pdev->rom);
+		return phys_to_virt(pdev->rom);
 	/*
 	 * IORESOURCE_ROM_SHADOW set on x86, x86_64 and IA64 supports legacy
 	 * memory map if the VGA enable bit of the Bridge Control register is

include/linux/pci.h

@@ -333,7 +333,7 @@ struct pci_dev {
 	};
 	struct pci_ats	*ats;	/* Address Translation Service */
 #endif
-	void *rom; /* Physical pointer to ROM if it's not from the BAR */
+	phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */
 	size_t romlen; /* Length of ROM if it's not from the BAR */
 };