d93d989e5d
Adress an implicit function declaration error by ensuring that DRM-dependent
functions are only compiled when HAVE_LIBDRM is set.
Fixes: 59813ae468 ("wsi: Add common infrastructure for explicit sync")
Signed-off-by: Valentine Burley <valentine.burley@gmail.com>
Reviewed-by: Joshua Ashton <joshua@froggi.es>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29267>