Adds AMDGPU specific variadic MCExpr operations 'max' and 'or'. Relands #82022 with fixes
Reverts llvm/llvm-project#82022 Fails on hwasan build bot: https://lab.llvm.org/buildbot/#/builders/236/builds/9874/steps/10/logs/stdio
Adds AMDGPU specific variadic MCExpr operations 'max' and 'or'.