This adds a scheduling model for the Neoverse V2. All information is taken from
the Neoverse V2 Software Optimisation Guide:
https://developer.arm.com/documentation/PJDOC-466751330-593177/r0p2
The model was tested on hardware and performance results are overall neutral
for SPEC2017 INT and FP compared to the Neoverse N2 scheduling model currently
used as default.
Having this model enables a more accurate description of the CPU with llvm-mca.
Depends on D152161
Should this use the load unit for 3 ResourceCycles, as opposed to being pipelined?