Merge tag 'arm-soc/for-4.20/devicetree' of https://github.com/Broadcom/stblinux into next/dt

This pull request contains Broadcom ARM-based SoCs Device Tree changes
for 4.20, please pull the following:

- Rafal updates the Broadcom BCM5301x (Northstar) DTS files to use the
  new style partition parser and removes the unsupported/undocumented
  linux,part-probe properties that were previously introduced

- Stefan adds supports for the Raspberry Pi Compute Module 3/3Lite, he
  also updates the Raspberry Pi 3B+ USB Ethernet adapter to have proper
  LED configuration

- Rob fixes a bunch of SPI bus warnings in the Northstar Plus and
  Hurricane 2 DTS files

- Florian documents the Broadcom roboswitch Switch Register Access Block
  (SRAB) interrupts, adds the switch interrupts to the Northstar Plus
  DTS include file and finally updates the BCM958625HR reference board to
  have the proper SFP module definition

* tag 'arm-soc/for-4.20/devicetree' of https://github.com/Broadcom/stblinux

:
  ARM: dts: bcm: Fix SPI bus warnings
  ARM: dts: NSP: Wire up switch interrupts
  dt-bindings: net: dsa: Document B53 SRAB interrupts and registers
  ARM: dts: NSP: Enable SFP on bcm958625hr
  ARM: dts: bcm283x-rpi-lan7515: Enable Ethernet LEDs
  ARM: dts: BCM5301X: Specify flash partitions
  ARM: dts: add Raspberry Pi Compute Module 3 and IO board
  dt-bindings: bcm: Add Raspberry Pi CM3 and CM3L

Signed-off-by: Olof Johansson <olof@lixom.net>