Implement methods for calling C functions in Liftoff on MIPS and
MIPS64.

Bug: v8:6600
Change-Id: I43f43dc3d1e13f15dc8359ce7a8a8b2273f0ff62
Reviewed-on: https://chromium-review.googlesource.com/966282Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Commit-Queue: Sreten Kovacevic <sreten.kovacevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#51996}