[dsymutil] Find relocations that correspond to debug map entries.

These 'valid relocations' in the debug_info section will be how
dsymutil identifies the DIEs it needs to keep in the linked debug
information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229178 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed