drm/gem: add _locked suffix to drm_gem_object_put

Vast majority of DRM (core and drivers) are struct_mutex free.

As such we have only a handful of cases where the locked helper should
be used. Make that stand out a little bit better.

Done via the following script:

__from=drm_gem_object_put
__to=drm_gem_object_put_locked

for __file in $(git grep --name-only --word-regexp $__from); do
  sed -i  "s/\<$__from\>/$__to/g" $__file;
done

Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200515095118.2743122-12-emil.l.velikov@gmail.com
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index c3bdade..a231a2b 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -187,7 +187,7 @@ struct drm_gem_object {
 	 *
 	 * Reference count of this object
 	 *
-	 * Please use drm_gem_object_get() to acquire and drm_gem_object_put()
+	 * Please use drm_gem_object_get() to acquire and drm_gem_object_put_locked()
 	 * or drm_gem_object_put_unlocked() to release a reference to a GEM
 	 * buffer object.
 	 */
@@ -375,7 +375,7 @@ drm_gem_object_put_unlocked(struct drm_gem_object *obj)
 	kref_put(&obj->refcount, drm_gem_object_free);
 }
 
-void drm_gem_object_put(struct drm_gem_object *obj);
+void drm_gem_object_put_locked(struct drm_gem_object *obj);
 
 int drm_gem_handle_create(struct drm_file *file_priv,
 			  struct drm_gem_object *obj,