gbm: Don't traverse backwards for includes

This is just a bad idea and should be avoided. Instead, make the #include
flat and fix the build systems to pass the proper -I flags

v2: - add an inc_wayland_drm instead passing a path to
      include_directories (Emil)
    - update commit message (Emil)

Signed-off-by: Dylan Baker <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Reviewed-by: Daniel Stone <[email protected]> (v1)
Reviewed-by: Eric Engestrom <[email protected]> (v1)

0 files changed, 0 insertions, 0 deletions