misc: Merged release-staging-v19.0.0.0 into develop

diff --cc CONTRIBUTING.md
Simple merge

diff --cc src/arch/arm/kvm/arm_cpu.cc
Simple merge

diff --cc src/arch/arm/kvm/base_cpu.cc
Simple merge

diff --cc src/arch/arm/miscregs.cc
Simple merge

diff --cc src/dev/arm/RealView.py
Simple merge

diff --cc src/sim/pseudo_inst.hh
Simple merge