vulkan/wsi/wayland: remove format switch from wl_shm_format_for_vk_format
Instead of maintaining two similar switches (one for DRM formats,
one for wl_shm formats), only maintain a single switch (for DRM)
and convert DRM formats to enum wl_shm_format. This reduces the
risk to have inconsistencies between these two functions.
Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14634>