[U-Boot] [RFC] Migrate to Linux Kernel style SPDX Tags for v2018.05

[Fabio Estevam]

On Mon, May 7, 2018 at 3:19 PM, Marek Vasut <marek.vasut at gmail.com> wrote:

> // SPDX foo
> /*
>  * bar
>  */
>
> Sort of stuff in the files.

Yes, it seems that the preferred style is to move everything to //
style in the initial comments:

// SPDX foo
//
// bar