drm/xen: remove _unlocked suffix in drm_gem_object_put_unlocked

Spelling out _unlocked for each and every driver is a annoying.
Especially if we consider how many drivers, do not know (or need to)
about the horror stories involving struct_mutex.

Just drop the suffix. It makes the API cleaner.

Done via the following script:

__from=drm_gem_object_put_unlocked
__to=drm_gem_object_put
for __file in $(git grep --name-only $__from); do
  sed -i  "s/$__from/$__to/g" $__file;
done

Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200515095118.2743122-38-emil.l.velikov@gmail.com

drivers/gpu/drm/xen/xen_drm_front.c

@@ -419,7 +419,7 @@ static int xen_drm_drv_dumb_create(struct drm_file *filp,
 		goto fail_handle;
 
 	/* Drop reference from allocate - handle holds it now */
-	drm_gem_object_put_unlocked(obj);
+	drm_gem_object_put(obj);
 	return 0;
 
 fail_handle:
@@ -427,7 +427,7 @@ static int xen_drm_drv_dumb_create(struct drm_file *filp,
 				   xen_drm_front_dbuf_to_cookie(obj));
 fail_backend:
 	/* drop reference from allocate */
-	drm_gem_object_put_unlocked(obj);
+	drm_gem_object_put(obj);
 fail:
 	DRM_ERROR("Failed to create dumb buffer: %d\n", ret);
 	return ret;