dts: broadcom: Move viper-common.dtsi to dts/common

Squash the two copies of this file found in `dts/arm` and `dts/arm64`.
Their contents were identical up to devicetree property ordering.

Signed-off-by: Grzegorz Swiderski <grzegorz.swiderski@nordicsemi.no>

dts/arm/broadcom/viper-m7.dtsi

@@ -5,8 +5,7 @@
  */
 
 #include <arm/armv7-m.dtsi>
-
-#include "viper-common.dtsi"
+#include <broadcom/viper-common.dtsi>
 
 / {
 	cpus {

dts/arm64/broadcom/viper-a72.dtsi

@@ -5,9 +5,9 @@
  */
 
 #include <arm64/armv8-a.dtsi>
-#include <zephyr/dt-bindings/interrupt-controller/arm-gic.h>
+#include <broadcom/viper-common.dtsi>
 
-#include "viper-common.dtsi"
+#include <zephyr/dt-bindings/interrupt-controller/arm-gic.h>
 
 / {
 	cpus {

dts/arm64/broadcom/viper-common.dtsi

@@ -1,72 +0,0 @@
-/*
- * Copyright 2020 Broadcom
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-/ {
-	soc {
-		sram0: memory@400000 {
-			device_type = "memory";
-			reg = <0x00400000 0x80000>;
-		};
-
-		uart0: uart@40020000 {
-			compatible = "ns16550";
-			reg = <0x40020000 0x400>;
-			reg-shift = <2>;
-			clock-frequency = <25000000>;
-			status = "disabled";
-		};
-
-		uart1: uart@48100000 {
-			compatible = "ns16550";
-			reg = <0x48100000 0x400>;
-			reg-shift = <2>;
-			clock-frequency = <100000000>;
-			status = "disabled";
-		};
-
-		pl330: pl330@48300000 {
-			compatible = "arm,dma-pl330";
-			reg = <0x48300000 0x2000>,
-			      <0x482f005c 0x20>;
-			reg-names = "pl330_regs",
-				    "control_regs";
-			microcode = <0x63b00000  0x1000>;
-			dma-channels = <8>;
-			#dma-cells = <1>;
-		};
-	};
-
-	pcie {
-		#address-cells = <2>;
-		#size-cells = <2>;
-
-		pcie0_ep: pcie@4e100000 {
-			compatible = "brcm,iproc-pcie-ep";
-			reg = <0x0 0x4e100000 0x0 0x2100>,
-			      <0x0 0x50000000 0x0 0x8000000>,
-			      <0x4 0x0 0x0 0x8000000>;
-			reg-names = "iproc_pcie_regs", "map_lowmem",
-				    "map_highmem";
-			dmas = <&pl330 0>, <&pl330 1>;
-			dma-names = "txdma", "rxdma";
-		};
-
-		paxdma: paxdma@4e100800 {
-			compatible = "brcm,iproc-pax-dma-v2";
-			reg = <0x0 0x4e100800 0x0 0x2100>,
-			      <0x0 0x4f000000 0x0 0x200000>,
-			      <0x0 0x4f200000 0x0 0x10000>;
-			reg-names = "dme_regs", "rm_ring_regs",
-				    "rm_comm_regs";
-			dma-channels = <4>;
-			#dma-cells = <1>;
-			bd-memory = <0x63b00000 0x100000>;
-			scr-addr-loc = <0x200061f0>;
-			scr-size-loc = <0x200061f8>;
-			pcie-ep = <&pcie0_ep>;
-		};
-	};
-};