drm/irq: drm_legacy_ prefix for legacy ioctls

Spotted while auditing our ioctl table. Also nuke the
not-really-kerneldoc comments, we don't document internals and
definitely don't want to mislead people with the old dragons.

I think with this all the legacy ioctls now have proper drm_legacy_
prefixes.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161213230814.19598-2-daniel.vetter@ffwll.ch
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index db80ec8..a6213f8 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -58,10 +58,10 @@ extern unsigned int drm_timestamp_monotonic;
 /* IOCTLS */
 int drm_wait_vblank(struct drm_device *dev, void *data,
 		    struct drm_file *filp);
-int drm_control(struct drm_device *dev, void *data,
-		struct drm_file *file_priv);
-int drm_modeset_ctl(struct drm_device *dev, void *data,
-		    struct drm_file *file_priv);
+int drm_legacy_irq_control(struct drm_device *dev, void *data,
+			   struct drm_file *file_priv);
+int drm_legacy_modeset_ctl(struct drm_device *dev, void *data,
+			   struct drm_file *file_priv);
 
 /* drm_auth.c */
 int drm_getmagic(struct drm_device *dev, void *data,