SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

9 files changed, 9 insertions, 19 deletions

diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile
index 29d5991..16739e7 100644
--- a/drivers/pwm/Makefile
+++ b/drivers/pwm/Makefile
@@ -1,12 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # (C) Copyright 2001
 # Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 #ccflags-y += -DDEBUG
 
diff --git a/drivers/pwm/exynos_pwm.c b/drivers/pwm/exynos_pwm.c
index 1275752..1c829d2 100644
--- a/drivers/pwm/exynos_pwm.c
+++ b/drivers/pwm/exynos_pwm.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2016 Google Inc.
- *
- * SPDX-License-Identifier:     GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/pwm/pwm-imx-util.c b/drivers/pwm/pwm-imx-util.c
index 97ac0c8..823a9d2 100644
--- a/drivers/pwm/pwm-imx-util.c
+++ b/drivers/pwm/pwm-imx-util.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * (C) Copyright 2014
  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
@@ -7,8 +8,6 @@
  * Based on linux:drivers/pwm/pwm-imx.c
  * from
  * Sascha Hauer <s.hauer@pengutronix.de>
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/pwm/pwm-imx-util.h b/drivers/pwm/pwm-imx-util.h
index 5c18651..82c61d7 100644
--- a/drivers/pwm/pwm-imx-util.h
+++ b/drivers/pwm/pwm-imx-util.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * (C) Copyright 2014
  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
  *
  * Basic support for the pwm module on imx6.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #ifndef _pwm_imx_util_h_
diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c
index 3f808f9..83c1bfa 100644
--- a/drivers/pwm/pwm-imx.c
+++ b/drivers/pwm/pwm-imx.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2014
  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
  *
  * Basic support for the pwm module on imx6.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/pwm/pwm-uclass.c b/drivers/pwm/pwm-uclass.c
index 69051fe..027181c 100644
--- a/drivers/pwm/pwm-uclass.c
+++ b/drivers/pwm/pwm-uclass.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2016 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/pwm/rk_pwm.c b/drivers/pwm/rk_pwm.c
index 4c1ee67..9994cba 100644
--- a/drivers/pwm/rk_pwm.c
+++ b/drivers/pwm/rk_pwm.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2016 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/pwm/sandbox_pwm.c b/drivers/pwm/sandbox_pwm.c
index 48f1698..4b50b19 100644
--- a/drivers/pwm/sandbox_pwm.c
+++ b/drivers/pwm/sandbox_pwm.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2015 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/pwm/tegra_pwm.c b/drivers/pwm/tegra_pwm.c
index 2119e1d..02c3650 100644
--- a/drivers/pwm/tegra_pwm.c
+++ b/drivers/pwm/tegra_pwm.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2016 Google Inc.
- *
- * SPDX-License-Identifier:     GPL-2.0+
  */
 
 #include <common.h>