[mips] Added support for the div, divu, ddiv and ddivu macros which use traps...

[mips] Added support for the div, divu, ddiv and ddivu macros which use traps and breaks in the integrated assembler.

Summary:

Patch by Scott Egerton

Reviewers: vkalintiris, dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11675

llvm-svn: 246763