Subzero, MIPS32: Cross-testing enabled for MIPS32

Enables running crosstests for MIPS32 target.

R=stichnot@chromium.org

Review URL: https://codereview.chromium.org/2085303002 .

Patch from Srdjan Obucina <Srdjan.Obucina@imgtec.com>.
13 files changed