util/autoport: Make printing of SPDX headers generic

Previously, Add_gpl() was only used with C and ASL source code files,
and was hard coded to use the C /* */ style comment, preventing it from
being used with files with other comment styles. Convert this into a
generic function for adding arbitrary SPDX license identifiers for
arbitrary filetypes. This replaces the hard coded GPL-2.0-or-later
string used in gma-mainboard.ads with a call to the new function.

This is also used to add SPDX headers to Kconfig and Makefile sources;
as previous commits added them to all such files in the tree.

Tested against logs from a Latitude E6430 (Ivy Bridge) and Precision
M6800 (Haswell) to check that license headers that were already being
generated did not change.

Change-Id: I24a1ccd0afb7045e878bf6eaae7a23f828a9240d
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83184
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions