Merge tag 'pull-fpu-20260430' of https://gitlab.com/rth7680/qemu into staging

fpu: Drop PARTS_GENERIC_64_128{_256}
fpu: Drop FRAC_GENERIC_64_128{_256}
fpu: Constify frac{64,128,256}_* inputs
fpu: Return struct from *_unpack_canonical
fpu: Inline some *_unpack_raw into only caller
fpu: Change parts_float_to_float_narrow to parts128_to_parts64
fpu: Change parts_float_to_float_widen to parts64_to_parts128

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* tag 'pull-fpu-20260430' of https://gitlab.com/rth7680/qemu: (48 commits)
  fpu: Change parts_float_to_float_widen to parts64_to_parts128
  fpu: Change parts_float_to_float_narrow to parts128_to_parts64
  fpu: Return struct from float128_unpack_canonical
  fpu: Return struct from float128_unpack_raw
  fpu: Inline floatx80_unpack_raw into only caller
  fpu: Return struct from float{32,64}_unpack_canonical
  fpu: Inline float64_unpack_raw into callers
  fpu: Inline float32_unpack_raw into callers
  fpu: Return struct from bfloat16_unpack_canonical
  fpu: Inline bfloat16_unpack_raw into callers
  fpu: Return struct from float16_unpack_canonical
  fpu: Return struct from float16a_unpack_canonical
  fpu: Inline float16_unpack_raw into callers
  fpu: Return struct from float8_e5m2_unpack_canonical
  fpu: Return struct from float8_e4m3_unpack_canonical
  fpu: Return struct from float4_e2m1_unpack_canonical
  fpu: Return structure from unpack_raw64
  fpu: Constify frac{64,128,256}_* inputs
  fpu: Drop FRAC_GENERIC_64_128{_256}
  fpu: Drop PARTS_GENERIC_64_128{_256}
  ...

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