ARM: dts: BCM53573: Relicense BCM947189ACDBMR to the GPL 2.0+ / MIT

From: Rafał Miłecki <[email protected]>

All BCM53573 DTS files including bcm53573.dtsi use GPL 2.0+ / MIT. That results in some licensing spaghetti for BCM947189ACDBMR which is ISC licensed. It's unclear what's the outcome license of this one.

Relicense Florian's file to match other SoC family files.

---
Florian: let me know if you're OK with this change. Right now I'm not sure what's the result of ISC licensed file including GPL 2.0+ / MIT .dtsi.

Except for your changes, bcm947189acdbmr.dts file has been only touched in rather irrelevant commits:
abe60a3a7afb ("ARM: dts: Kill off skeleton{64}.dtsi") c5aec5611aec ("ARM: dts: broadcom: align gpio-key node names with dtschema") af84101e3f22 ("ARM: dts: broadcom: align LED node names with dtschema")

---
 arch/arm/boot/dts/broadcom/bcm947189acdbmr.dts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

index 0b8727ae6f16..f7570b68e5f5 100644
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /*
  * Copyright (C) 2017 Broadcom
  * Author: Florian Fainelli <[email protected]>
- *
- * Licensed under the ISC license.
  */
 
 /dts-v1/;

2.35.3