device_cgroup: Fix kernel-doc warnings in device_cgroup

Fix kernel-doc warnings in device_cgroup:

security/device_cgroup.c:835: warning: Excess function parameter
'dev_cgroup' description in 'devcgroup_legacy_check_permission'.
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

security/device_cgroup.c

@@ -822,7 +822,6 @@ struct cgroup_subsys devices_cgrp_subsys = {
 
 /**
  * devcgroup_legacy_check_permission - checks if an inode operation is permitted
- * @dev_cgroup: the dev cgroup to be tested against
  * @type: device type
  * @major: device major number
  * @minor: device minor number