fdt: update bcm283x device tree sources to Linux 5.1-rc6 state

Updating the bcm283x device tree sources adds the device trees for

- Raspberry Pi 3 Model A+
- Raspberry Pi 3 Model B+
- Raspberry Pi Compute Module IO board rev1
- Raspberry Pi Compute Module 3 IO board V3.0
- Raspberry Pi Zero

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/arch/arm/dts/bcm283x-rpi-smsc9512.dtsi b/arch/arm/dts/bcm283x-rpi-smsc9512.dtsi
index 9a0599f..967e081 100644
--- a/arch/arm/dts/bcm283x-rpi-smsc9512.dtsi
+++ b/arch/arm/dts/bcm283x-rpi-smsc9512.dtsi
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 / {
 	aliases {
 		ethernet0 = &ethernet;