[clang] [llvm] [X86][AMX] Support AMX-MOVRS (PR #115151)

[Phoebe Wang via cfe-commits]

https://github.com/phoebewang commented:

Add Clang release note
Add `Features["amx-movrs"]` in Host.cpp
Add `AMX_MOVRS` in X86TargetParser.def
Add `ImpliedFeaturesAMX_MOVRS` in X86TargetParser.cpp


https://github.com/llvm/llvm-project/pull/115151