[XS] Change in coreboot[main]: src: Add missing SPDX license headers

[Nicholas Chin (Code Review)]

Nicholas Chin has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/81421?usp=email )

Change subject: src: Add missing SPDX license headers
......................................................................

src: Add missing SPDX license headers

Other files in the commits that added these files were licensed under
GPL-2.0-only, and the project as a whole is GPL-2.0-only, so use that
as the license for these files.

Change-Id: I6c1a7ba582f61f98069ebf3857a8b5bdc8588c3e
Signed-off-by: Nicholas Chin 
---
M src/mainboard/google/myst/variants/baseboard/include/baseboard/port_descriptors.h
M src/mainboard/google/skyrim/variants/baseboard/include/baseboard/port_descriptors.h
M src/soc/sifive/fu740/include/soc/gpio.h
3 files changed, 6 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/21/81421/1

diff --git a/src/mainboard/google/myst/variants/baseboard/include/baseboard/port_descriptors.h b/src/mainboard/google/myst/variants/baseboard/include/baseboard/port_descriptors.h
index 7742bed..bc92b69 100644
--- a/src/mainboard/google/myst/variants/baseboard/include/baseboard/port_descriptors.h
+++ b/src/mainboard/google/myst/variants/baseboard/include/baseboard/port_descriptors.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef __BASEBOARD_PORT_DESCRIPTORS_H__
 #define __BASEBOARD_PORT_DESCRIPTORS_H__

diff --git a/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/port_descriptors.h b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/port_descriptors.h
index 40da0b4..1315379 100644
--- a/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/port_descriptors.h
+++ b/src/mainboard/google/skyrim/variants/baseboard/include/baseboard/port_descriptors.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef __BASEBOARD_PORT_DESCRIPTORS_H__
 #define __BASEBOARD_PORT_DESCRIPTORS_H__

diff --git a/src/soc/sifive/fu740/include/soc/gpio.h b/src/soc/sifive/fu740/include/soc/gpio.h
index b0466cc..a4d4ecb 100644
--- a/src/soc/sifive/fu740/include/soc/gpio.h
+++ b/src/soc/sifive/fu740/include/soc/gpio.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
 #ifndef _SOC_SIFIVE_FU740_GPIO_H_
 #define _SOC_SIFIVE_FU740_GPIO_H_