USB: serial: keyspan_usa: add proper SPDX lines for .h files

[Johan Hovold <johan@kernel.org>]

On Thu, Jan 17, 2019 at 09:23:46AM +0100, Greg Kroah-Hartman wrote:
> The keyspan_usa??msg.h files are under a BSD-3 style license, so
> properly label them as such with a SPDX line at the top of the file.
> 
> Cc: Johan Hovold <johan@kernel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  drivers/usb/serial/keyspan_usa26msg.h | 1 +
>  drivers/usb/serial/keyspan_usa28msg.h | 1 +
>  drivers/usb/serial/keyspan_usa49msg.h | 1 +
>  drivers/usb/serial/keyspan_usa67msg.h | 1 +
>  drivers/usb/serial/keyspan_usa90msg.h | 1 +
>  5 files changed, 5 insertions(+)
> 
> diff --git a/drivers/usb/serial/keyspan_usa26msg.h b/drivers/usb/serial/keyspan_usa26msg.h
> index 09e21e84fc4e..a68f1fb25b8a 100644
> --- a/drivers/usb/serial/keyspan_usa26msg.h
> +++ b/drivers/usb/serial/keyspan_usa26msg.h
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: BSD-3-Clause */

Actually, all but the keyspan_usa67msg.h appear to use a modified
BSD-3-Clause with the second (binary-distribution) clause removed.

I assume you're aware of this and that the BSD-3-Clause identifier is
still applicable. Just thought I'd mention it.

Johan