Also, implement supporting function for translating Condition to
MIPS FPUCondition.

Bug: v8:6600
Change-Id: I5a3497a8445e2fc5a18abd56a83cd1451c2c48ec
Reviewed-on: https://chromium-review.googlesource.com/1010163
Commit-Queue: Sreten Kovacevic <sreten.kovacevic@mips.com>
Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#52573}