x86: add apic probe for genapic 64bit - fix

intr_remapping_enabled get assigned later, so need to check that
in setup_apic_routing

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/genx2apic_phys.c b/arch/x86/kernel/genx2apic_phys.c
index 3229c68..958d537 100644
--- a/arch/x86/kernel/genx2apic_phys.c
+++ b/arch/x86/kernel/genx2apic_phys.c
@@ -21,7 +21,7 @@
 
 static int __init x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
-	if (cpu_has_x2apic && intr_remapping_enabled && x2apic_phys)
+	if (cpu_has_x2apic && x2apic_phys)
 		return 1;
 
 	return 0;