Merge tag 'arm-soc/for-5.8/devicetree' of https://github.com/Broadcom/stblinux into...

This pull request contains Broadcom ARM-based SoCs Device Tree changes
for v5.8, please pull the following:

- Nicolas updates the Raspberry Pi 4 board DTS to include the GPIO
  controlling power to the SD card, adds support for the vmmc regulator
  for the emmc2 controller and finally updates the power management
  provider for V3D to use the firmware to solve instabilities.

* tag 'arm-soc/for-5.8/devicetree' of https://github.com/Broadcom/stblinux:
  ARM: dts: bcm283x: Use firmware PM driver for V3D
  ARM: dts: bcm2711: Add vmmc regulator in emmc2
  ARM: dts: bcm2711: Update expgpio's GPIO labels

Link: https://lore.kernel.org/r/20200511210522.28243-2-f.fainelli@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>