MIPS: [turbofan] Optimize division/modulus by constant.

Port r24595 (d0f464e)

TEST=cctest,mjsunit,unittests
BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/651223003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24611 ce2b1a6d-e550-0410-aec6-3dcde31c8c00