Port for: https://chromium-review.googlesource.com/c/v8/v8/+/608975

In code generator for MIPS32, certain instructions are substituted with
corresponding macro-instructions.

TEST=
BUG=

Change-Id: I2ac47a785f0ea14c448f727da124dc78ea6c81af
Reviewed-on: https://chromium-review.googlesource.com/699998Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com>
Cr-Commit-Position: refs/heads/master@{#48278}