Make drm_can_sleep() match linux.  No change in behaviour as it's only ever used to decide between mdelay and drm_msleep and our drm_msleep delays instead of sleeping.
Make drm_can_sleep() match linux.  No change in behaviour as it's
only ever used to decide between mdelay and drm_msleep and our
drm_msleep delays instead of sleeping.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars