drm: fix minor number range calculation

Currently, both ranges overlap. Fix the limits so both ranges are mutually
exclusive. Also use the occasion to convert whitespaces to tabs.
Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
(fixed up tabs and adjust commit-msg accordingly)
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_stub.c

@@ -114,10 +114,10 @@ static int drm_minor_get_id(struct drm_device *dev, int type)
 
 	if (type == DRM_MINOR_CONTROL) {
 		base += 64;
-                limit = base + 127;
+		limit = base + 63;
 	} else if (type == DRM_MINOR_RENDER) {
 		base += 128;
-                limit = base + 255;
+		limit = base + 63;
 	}
 
 	mutex_lock(&dev->struct_mutex);