The macro was available in libdrm for ages. Furthermore having a guard
like this is a very bad idea.
Building on an old server will result in a missing run-time functionality.
Since it's UABI one can use a local fallback, old kernels will return
-EINVAL and the fallback path will kick in.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
f368428ab8