Now that mem(4) is a kernel module, we need to add a dependency on

it in drm(4) for mem_range_attr_set().  This fixes loading a DRM
driver as a module.

Reviewed by:	anholt

sys/dev/drm/drm_drv.h

@@ -124,6 +124,7 @@ static void DRM(cleanup)(drm_device_t *dev);
 #if __REALLY_HAVE_AGP
 MODULE_DEPEND(DRIVER_NAME, agp, 1, 1, 1);
 #endif
+MODULE_DEPEND(DRIVER_NAME, mem, 1, 1, 1);
 #endif /* __FreeBSD__ */
 
 #ifdef __NetBSD__