This is a temporary rename of zx_task_suspend(), to allow the API
signature to be updated. It will be followed by a rename back to the
old name, with the new signature.

Change-Id: I896d714e556dad2e0740891ff99cb0b51c6c1943
Reviewed-on: https://chromium-review.googlesource.com/1158998Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54850}