This patch backports the change from #15711 (to ZFS 2.2.x) because
some OS vendors have back-ported this change from Linux 6.2+ to their
older kernels.
The original patch addressed these issues:
1. Linux 6.2+ on arm64 has exported them with `EXPORT_SYMBOL_GPL`, so
license compatibility must be checked before use.
2. On both arm and arm64, the definitions of these symbols are guarded
by `CONFIG_KERNEL_MODE_NEON`, but their declarations are still
present. Checking in configuration phase only leads to MODPOST
errors (undefined references).
Signed-off-by: Keith Gable <keith@ziggythehamster.sh>
Co-authored-by: Shengqi Chen <harry-chen@outlook.com>
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