Merge tag 'arm-soc/for-5.5/devicetree-part2' of https://github.com/Broadcom/stblinux...

This pull request contains the second batch of changes for Broadcom
ARM-based SoCs, please pull the following:

- Nicolas declares a CMA area within the first 1GB of DRAM in order for
  it to be guaranteed to reside there, otherwise ARM64's memory
  initialization will pick up a CMA area within ZONE_DMA32

- Stefan adds the Device Tree node for the built-in Ethernet controller
  (GENET) on the Raspberry Pi 4 model B board

* tag 'arm-soc/for-5.5/devicetree-part2' of https://github.com/Broadcom/stblinux:
  ARM: dts: bcm2711-rpi-4: Enable GENET support
  ARM: dts: bcm2711: force CMA into first GB of memory

Link: https://lore.kernel.org/r/20191118182931.11884-1-f.fainelli@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>