[U-Boot] Lots of SPDX-License Identifer have a trailing space

[Masahiro Yamada]

Hello Wolfgang,

I noticed many of SPDX-License blocks
have a trailing space after "GPL-2.0+".


For example, arch/arm/cpu/arm1136/start.S

 *
 * SPDX-License-Identifier:     GPL-2.0+[A Trailing Space]
 */


Is this space the one intentinally added?
(If not, I can send a patch to fix it.)

I am not sure whether I should precisely copy and paste
SPDX indentifier or drop a trailing space
when I add a new source file.


Best Regards
Masahiro Yamada