[X86][NewPM] Port x86-pre-tile-config (#175649)
Standard pass porting. Used callbacks to get MLI so we do not compute it
in the common case where we have no AMX registers. Also moved the call
to releaseMemory into runOnMachineFunction through a scope exit rather
than calling it through the pass manager so we can get consistent
behavior across both PMs. No test coverage added in this one as we also
need x86-tile-config to be able to run any tests.
