[ELF] - LinkerScript: Add workaround for gcc 6.2.0 failure w/auto
[ELF] - LinkerScript: Add workaround for gcc 6.2.0 failure w/auto

Will Dietz found and reported that lld does not compile with gcc 6.2.0,
more details https://llvm.org/bugs/show_bug.cgi?id=30438

And confirmed this change fixes the issue.

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@281900 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld