Merge tag 'pull-loongarch-20230920' of https://gitlab.com/gaosong/qemu into staging

Add LASX instructions support.

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* tag 'pull-loongarch-20230920' of https://gitlab.com/gaosong/qemu: (57 commits)
  target/loongarch: CPUCFG support LASX
  target/loongarch: Move simply DO_XX marcos togther
  target/loongarch: Implement xvld xvst
  target/loongarch: Implement xvshuf xvperm{i} xvshuf4i
  target/loongarch: Implement xvpack xvpick xvilv{l/h}
  target/loongarch: Implement xvreplve xvinsve0 xvpickve
  target/loongarch: Implement xvinsgr2vr xvpickve2gr
  target/loongarch: Implement xvbitsel xvset
  target/loongarch: Implement xvfcmp
  target/loongarch: Implement xvseq xvsle xvslt
  target/loongarch: Implement LASX fpu fcvt instructions
  target/loongarch: Implement LASX fpu arith instructions
  target/loongarch: Implement xvfrstp
  target/loongarch: Implement xvbitclr xvbitset xvbitrev
  target/loongarch: Implement xvpcnt
  target/loongarch: Implement xvclo xvclz
  target/loongarch: Implement xvssrlrn xvssrarn
  target/loongarch: Implement xvssrln xvssran
  target/loongarch: Implement xvsrlrn xvsrarn
  target/loongarch: Implement xvsrln xvsran
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>