Restricts cpu yield instructions a little.

Restricts cpu yield instructions a little.

Forwarded: https://github.com/microsoft/mimalloc/pull/350
Last-Update: 2021-02-11
Applied-Upstream: 3.0.0, https://github.com/solvespace/solvespace/commit/cdeb6c90fb753a2b0f6d033affedbcceab046758

adding clobber for ARM and preventing older 32 bits chips not supporting this instruction.

Backport of https://github.com/microsoft/mimalloc/commit/33a10b48605f8bb419487a03125815ad6ee00a70

Enhanced via https://github.com/mr-c/misc/wiki/pause-techniques-on-many-architectures

Gbp-Pq: Name 10_mimalloc_restrict_cpu_yield.patch