[lld][Hexagon] Enable Hexagon sdata sorting test

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@188981 91177308-0d34-0410-b5e6-96231b3b80d8
[lld][Driver] Fix the unit test for lld gnu flavor

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@188982 91177308-0d34-0410-b5e6-96231b3b80d8