For lcov tests, don't Xfail mips littl endian (mipsel-... and mip64el-...)
targets. Just big endian (mips-... and mips64-...)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202049 91177308-0d34-0410-b5e6-96231b3b80d8