x86, apic: clean up ->ioapic_phys_id_map()

- separate the namespace

 - remove macros

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index 7b7fc47..f2a3418 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -77,7 +77,7 @@
 	.vector_allocation_domain	= bigsmp_vector_allocation_domain,
 	.init_apic_ldr			= bigsmp_init_apic_ldr,
 
-	.ioapic_phys_id_map		= ioapic_phys_id_map,
+	.ioapic_phys_id_map		= bigsmp_ioapic_phys_id_map,
 	.setup_apic_routing		= setup_apic_routing,
 	.multi_timer_check		= multi_timer_check,
 	.apicid_to_node			= apicid_to_node,