xxbrq includes a constant value of `31` as part the opcode. This CL
includes this constant within constants-ppc instead of adding
it while emitting code.


Change-Id: I897f5f86165c7b006a829dcb2ee2a0c9dc2ef1b3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2891935Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#74558}