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>
diff --git a/board/freescale/c29xpcie/Makefile b/board/freescale/c29xpcie/Makefile
index 93b3cba..2a9c1be 100644
--- a/board/freescale/c29xpcie/Makefile
+++ b/board/freescale/c29xpcie/Makefile
@@ -1,7 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright 2013 Freescale Semiconductor, Inc.
 #
-# SPDX-License-Identifier:	GPL-2.0+
 
 MINIMAL=
 ifdef CONFIG_SPL_BUILD
diff --git a/board/freescale/c29xpcie/c29xpcie.c b/board/freescale/c29xpcie/c29xpcie.c
index 9d2888d..8ee3e14 100644
--- a/board/freescale/c29xpcie/c29xpcie.c
+++ b/board/freescale/c29xpcie/c29xpcie.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/freescale/c29xpcie/cpld.c b/board/freescale/c29xpcie/cpld.c
index 37722da..f57047d 100644
--- a/board/freescale/c29xpcie/cpld.c
+++ b/board/freescale/c29xpcie/cpld.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /**
  * Copyright 2013 Freescale Semiconductor
  * Author: Mingkai Hu <Mingkai.hu@freescale.com>
  *         Po Liu <Po.Liu@freescale.com>
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * This file provides support for the board-specific CPLD used on some Freescale
  * reference boards.
  *
diff --git a/board/freescale/c29xpcie/cpld.h b/board/freescale/c29xpcie/cpld.h
index 20862a3..02e9160 100644
--- a/board/freescale/c29xpcie/cpld.h
+++ b/board/freescale/c29xpcie/cpld.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /**
  * Copyright 2013 Freescale Semiconductor
  * Author: Mingkai Hu <Mingkai.Hu@freescale.com>
  *         Po Liu <Po.Liu@freescale.com>
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * This file provides support for the ngPIXIS, a board-specific FPGA used on
  * some Freescale reference boards.
  */
diff --git a/board/freescale/c29xpcie/ddr.c b/board/freescale/c29xpcie/ddr.c
index 7c915b0..5795a27 100644
--- a/board/freescale/c29xpcie/ddr.c
+++ b/board/freescale/c29xpcie/ddr.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/freescale/c29xpcie/law.c b/board/freescale/c29xpcie/law.c
index 80e5fff..6d441d8 100644
--- a/board/freescale/c29xpcie/law.c
+++ b/board/freescale/c29xpcie/law.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/freescale/c29xpcie/spl.c b/board/freescale/c29xpcie/spl.c
index 28541a7..5db60d8 100644
--- a/board/freescale/c29xpcie/spl.c
+++ b/board/freescale/c29xpcie/spl.c
@@ -1,6 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0+
 /* Copyright 2013 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/freescale/c29xpcie/spl_minimal.c b/board/freescale/c29xpcie/spl_minimal.c
index 8f96b67..7452cec 100644
--- a/board/freescale/c29xpcie/spl_minimal.c
+++ b/board/freescale/c29xpcie/spl_minimal.c
@@ -1,6 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0+
 /* Copyright 2013 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/freescale/c29xpcie/tlb.c b/board/freescale/c29xpcie/tlb.c
index 85d58c8..ef844a0 100644
--- a/board/freescale/c29xpcie/tlb.c
+++ b/board/freescale/c29xpcie/tlb.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>