[lavapipe] Remove Wayland dependency from runtime

- Split runtime target so lavapipe depends on its
  own runtime target that in turn does not depend
  on wsi.

- whitespace-only change to vk_semaphore.c.

Change-Id: I559ea26a0ed7827a94731837879b759f5b87c33c
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/mesa/+/983596
Reviewed-by: John Bauman <jbauman@google.com>
Reviewed-by: Craig Stout <cstout@google.com>
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/mesa/+/1005913
Reviewed-by: Josh Gargus <jjosh@google.com>
Commit-Queue: Josh Gargus <jjosh@google.com>
4 files changed