- x86/kconfig: Make it easier to switch to the new ORC unwinder
      (bnc#1018348).
    - x86/kconfig: Consolidate unwinders into multiple choice
      selection (bnc#1018348).
    - Update config files.
    - Refresh
      patches.suse/0001-x86-entry-64-Refactor-IRQ-stacks-and-make-them-NMI-s.patch.
    - Refresh
      patches.suse/0002-dwarf-do-not-throw-away-unwind-info.patch.
    - Refresh
      patches.suse/0002-x86-entry-64-Initialize-the-top-of-the-IRQ-stack-bef.patch.
    
    Update to version from -tip. ORC is in -tip completely. So make sure
    we use the upstream version.