unwind: unify _LIBUNWIND_SUPPORT_DWARF_UNWIND

Join the two paths for this macro.  At the end of the day, the difference was
that MIPS and ARM on Apple have different behaviour.  This is a setup change to
remove an instance of -Wexpansion-to-defined.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@266913 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed
tree: ffac2fc51a05450caa0a53fa397403d6f81bc7d8
  1. cmake/
  2. include/
  3. src/
  4. test/
  5. .arcconfig
  6. .clang-format
  7. CMakeLists.txt