[Mips] Make the test more tolerant to the linker output order
[Mips] Make the test more tolerant to the linker output order

The LLD output in the YAML mode depends on LLD_RUN_ROUNDTRIP_TEST
environment variable. Do not check unimportant YAML items like section-name.

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@224830 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld