[LLDB][MIPS] Adding SoftwareBreakpointTrapOpcode and RelocationJumpSlotType for MIPS

Patch by Bhushan Attarde

Reviewers: clayborg

Reviewed By: clayborg

Subscribers: petarj, dsanders, mohit.bhakkad, lldb-commits

Differential Revision: http://reviews.llvm.org/D6861

llvm-svn: 225436