[test-suite] Add reference output to Obsequi for the small problem size (--small)

Reference generated from trunk clang for MIPS and verified with clang for
X86_64 (from clang_3.0-6ubuntu3_amd64.deb in Ubuntu).



git-svn-id: https://llvm.org/svn/llvm-project/test-suite/trunk@205970 91177308-0d34-0410-b5e6-96231b3b80d8