Add copyright headers to all scripts

* https://reuse.software/tutorial/
* reuse addheader --copyright="The Calyx Institute" --license="Apache-2.0" */*.sh

Change-Id: I24ab74da8f4c9ddd8d38da3e782053b10499ea83

pixel/all.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # all:
 #

pixel/build-desc-fingerprint.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # build-desc-fingerprint:
 #

pixel/device.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # device:
 #

pixel/download.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # download:
 #

pixel/extract-factory-image.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # extract:
 #

pixel/firmware.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # extract:
 #

pixel/update-any-var.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # update-vars:
 #

pixel/update-device-vars.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-FileCopyrightText: 2022 The Calyx Institute
+#
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # update-vars:
 #