[PATCH] license: standardize SPDX tag for 3-Clause BSD

[Thomas Monjalon]

12/11/2025 10:31, Bruce Richardson:
> On Wed, Nov 12, 2025 at 10:13:35AM +0100, Thomas Monjalon wrote:
> > Make sure the SPDX tag is used as defined in license/README.
> > Reduce separator to single space.
> > Use parenthesis and uppercased "OR" when a second license is applied.
> 
> Upper-case or is fine, I suppose, but I'm not convinced we need the
> parentheses. However, I see other drivers tend to have it, so let's
> standardize on that.

I'm not convinced as well.

Looking at https://spdx.dev/learn/handling-license-info/
it seems we don't need parentheses in general.

Also we should improve our script to check SPDX tag.
Stephen has a patch already in this area.