[IA64] New IA64 core/thread detection patch

IPF SDM 2.2 changes definition of PAL_LOGICAL_TO_PHYSICAL to add
proc_number=-1 to get core/thread mapping info on the running processer.

Based on this change, we had better to update existing core/thread
detection in IA64 kernel correspondingly. The attached patch implements
this change. It simplifies detection code and eliminates potential race
condition. It also runs a bit faster and has better scalability especially
when cores and threads number grows up in one package.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

include/asm-ia64/pal.h

@@ -1640,8 +1640,7 @@ ia64_pal_logical_to_phys(u64 proc_number, pal_logical_to_physical_t *mapping)
 
 	if (iprv.status == PAL_STATUS_SUCCESS)
 	{
-		if (proc_number == 0)
-			mapping->overview.overview_data = iprv.v0;
+		mapping->overview.overview_data = iprv.v0;
 		mapping->ppli1.ppli1_data = iprv.v1;
 		mapping->ppli2.ppli2_data = iprv.v2;
 	}