COMPMID-1473: Added missing TypePrinter for CPUModel, added accessor for number of CPUs

Change-Id: If81d58b83143129bed91b9c6658b0cd4e623bc38
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/143664
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele DiGiorgio <michele.digiorgio@arm.com>
3 files changed