Merge branch 'for-next/sve' into for-next/core

Optimise SVE switching for CPUs with 128-bit implementations.

* for-next/sve:
  arm64/sve: Skip flushing Z registers with 128 bit vectors
  arm64/sve: Use the sve_flush macros in sve_load_from_fpsimd_state()
  arm64/sve: Split _sve_flush macro into separate Z and predicate flushes