Add lit.local.cfg in test/DebugInfo/MIR/Mips/

Add test/DebugInfo/MIR/Mips/lit.local.cfg so no tests are run if Mips is
not a supported target.
This should resolve buildbot failures seen after r322015.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322020 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed