[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>

include/asm-powerpc/pci-bridge.h

@@ -30,6 +30,11 @@ enum {
 	 * ISA forwarding enabled
 	 */
 	PPC_PCI_CAN_SKIP_ISA_ALIGN	= 0x00000008,
+
+	/* Enable domain numbers in /proc */
+	PPC_PCI_ENABLE_PROC_DOMAINS	= 0x00000010,
+	/* ... except for domain 0 */
+	PPC_PCI_COMPAT_DOMAIN_0		= 0x00000020,
 };