[POWERPC] pci32: Add platform option to enable /proc PCI domains

This adds flags the platforms can use to enable domain numbers
in /proc/bus/pci.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/pci.h b/include/asm-powerpc/pci.h
index 47cc117..2883f56 100644
--- a/include/asm-powerpc/pci.h
+++ b/include/asm-powerpc/pci.h
@@ -98,9 +98,6 @@
 #define get_pci_dma_ops()	NULL
 #endif
 
-/* Decide whether to display the domain number in /proc */
-extern int pci_proc_domain(struct pci_bus *bus);
-
 #else /* 32-bit */
 
 #ifdef CONFIG_PCI
@@ -112,17 +109,14 @@
 	*strategy_parameter = ~0UL;
 }
 #endif
-
-/* Set the name of the bus as it appears in /proc/bus/pci */
-static inline int pci_proc_domain(struct pci_bus *bus)
-{
-	return 0;
-}
-
 #endif /* CONFIG_PPC64 */
 
 extern int pci_domain_nr(struct pci_bus *bus);
 
+/* Decide whether to display the domain number in /proc */
+extern int pci_proc_domain(struct pci_bus *bus);
+
+
 struct vm_area_struct;
 /* Map a range of PCI memory or I/O space for a device into user space */
 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,