x86: consolidate the ->mps_oem_check() code

- spread out the mps_oem_check() namespace on a per APIC driver basis

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 d04b389..6bf6aaf 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -88,7 +88,7 @@
 	.check_phys_apicid_present	= bigsmp_check_phys_apicid_present,
 	.enable_apic_mode		= NULL,
 	.phys_pkg_id			= bigsmp_phys_pkg_id,
-	.mps_oem_check			= mps_oem_check,
+	.mps_oem_check			= NULL,
 
 	.get_apic_id			= get_apic_id,
 	.set_apic_id			= NULL,