Re-license IBM written files as Apache 2.0 OR GPLv2+

SPDX makes it a simpler diff.

I have audited the commit history of each file to ensure that they are
exclusively authored by IBM and thus we have the right to relicense.

The motivation behind this is twofold:
1) We want to enable experiments with coreboot, which is GPLv2 licensed
2) An upcoming firmware component wants to incorporate code from skiboot
   and code from the Linux kernel, which is GPLv2 licensed.

I have gone through the IBM internal way of gaining approval for this.

The following files are not exclusively authored by IBM, so are *not*
included in this update (I will be seeking approval from contributors):

core/direct-controls.c
core/flash.c
core/pcie-slot.c
external/common/arch_flash_unknown.c
external/common/rules.mk
external/gard/Makefile
external/gard/rules.mk
external/opal-prd/Makefile
external/pflash/Makefile
external/xscom-utils/Makefile
hdata/vpd.c
hw/dts.c
hw/ipmi/ipmi-watchdog.c
hw/phb4.c
include/cpu.h
include/phb4.h
include/platform.h
libflash/libffs.c
libstb/mbedtls/sha512.c
libstb/mbedtls/sha512.h
platforms/astbmc/barreleye.c
platforms/astbmc/garrison.c
platforms/astbmc/mihawk.c
platforms/astbmc/nicole.c
platforms/astbmc/p8dnu.c
platforms/astbmc/p8dtu.c
platforms/astbmc/p9dsu.c
platforms/astbmc/vesnin.c
platforms/rhesus/ec/config.h
platforms/rhesus/ec/gpio.h
platforms/rhesus/gpio.c
platforms/rhesus/rhesus.c
platforms/astbmc/talos.c
platforms/astbmc/romulus.c

Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
[oliver: fixed up the drift]
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

5 files changed, 5 insertions, 5 deletions

diff --git a/external/mambo/Makefile b/external/mambo/Makefile
index d750b98..942ebf2 100644
--- a/external/mambo/Makefile
+++ b/external/mambo/Makefile
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 
 CFLAGS=-O2 -m64 -pthread -Werror -Wall
 
diff --git a/external/mambo/mambo-socket-proxy.c b/external/mambo/mambo-socket-proxy.c
index 16053e7..64b6770 100644
--- a/external/mambo/mambo-socket-proxy.c
+++ b/external/mambo/mambo-socket-proxy.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 /*
  * Compile with:
  *   gcc -static -O2 mambo-socket-proxy.c -o mambo-socket-proxy -pthread
diff --git a/external/mambo/mambo_utils.tcl b/external/mambo/mambo_utils.tcl
index 8bde1e1..96f8971 100644
--- a/external/mambo/mambo_utils.tcl
+++ b/external/mambo/mambo_utils.tcl
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 #
 # Make Mambo behave a bit more like gdb
 #
diff --git a/external/mambo/qtrace_utils.tcl b/external/mambo/qtrace_utils.tcl
index 3fbcd59..bb20b31 100644
--- a/external/mambo/qtrace_utils.tcl
+++ b/external/mambo/qtrace_utils.tcl
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 
 if { [file exists $env(LIB_DIR)/perf/qtrace.tcl] == 1} {
     if { [catch {source $env(LIB_DIR)/perf/qtrace.tcl} issue ] } {
diff --git a/external/mambo/skiboot.tcl b/external/mambo/skiboot.tcl
index 15d00a4..6003fcb 100644
--- a/external/mambo/skiboot.tcl
+++ b/external/mambo/skiboot.tcl
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 #
 # scripts to run skiboot (and a payload) with Mambo (otherwise known as the
 # POWER[89] Functional Simulator)