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/default.c b/arch/x86/mach-generic/default.c
index 5c9266f..e5f85cd 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -69,7 +69,7 @@
 	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.enable_apic_mode		= NULL,
 	.phys_pkg_id			= default_phys_pkg_id,
-	.mps_oem_check			= mps_oem_check,
+	.mps_oem_check			= NULL,
 
 	.get_apic_id			= get_apic_id,
 	.set_apic_id			= NULL,