[dpdk-dev] Incorrect SPDX license

[Hemant Agrawal]

Hi Pavan
               In the recently merged patches, SPDX for few files is not on 
first line.  for  e.g. "drivers/event/octeontx/timvf_worker.c"
/*
* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017 Cavium, Inc
*/

Please fix that.

Regards,
Hemant