[LLDB][MIPS] Added expected failure for "test disassembler settings"

Patch by Nitesh Jain

Reviewers: clayborg, ovyalov.
Subscribers: jaydeep, bhushan, mohit.bhakkad, sagar, emaste, lldb-commits.
Differential Revision: http://reviews.llvm.org/D11562

llvm-svn: 243622