This pull request contains Broadcom ARM-based SoCs Device Tree changes
for 5.14, please pull the following:

- Rafal updates the BCM5301x, HR2, BCM63xx, BCM5301x, NSP and Cygnus DTS
  files to resolve a number of DT binding check warnings pertaining to
  NAND, pinmux, clocks, SPI

- Stefan provides a fix for an increase in the DWC2 controller's RX FIFO
  causing regressions on the Raspberry Pi 4B

- Mateusz adds a BCM2711 specific VEC compatible string to allow keying
  off that variant properly

- Stefan adds support for the Raspberry Pi 400 by doing some DTS/DTSI
  re-organization work and finally adding the DTS file proper

* tag 'arm-soc/for-5.14/devicetree' of https://github.com/Broadcom/stblinux:
  arm64: dts: broadcom: Add reference to RPi 400
  ARM: dts: Add Raspberry Pi 400 support
  ARM: dts: bcm283x: Fix up GPIO LED node names
  dt-bindings: arm: bcm2835: Add Raspberry Pi 400 to DT schema
  ARM: dts: Move BCM2711 RPi specific into separate dtsi
  ARM: dts: bcm283x: Fix up MMC node names
  ARM: boot: dts: bcm2711: Add BCM2711 VEC compatible
  Revert "ARM: dts: bcm283x: increase dwc2's RX FIFO size"
  ARM: dts: BCM5301X: Fixup SPI binding
  dt-bindings: clock: brcm, iproc-clocks: convert to the json-schema
  ARM: dts: BCM5301X: Fix pinmux subnodes names
  ARM: dts: Hurricane 2: Fix NAND nodes names
  ARM: dts: BCM63xx: Fix NAND nodes names
  ARM: NSP: dts: fix NAND nodes names
  ARM: Cygnus: dts: fix NAND nodes names
  ARM: brcmstb: dts: fix NAND nodes names
  ARM: dts: BCM5301X: Fix NAND nodes names

Link: https://lore.kernel.org/r/20210610194836.309869-1-f.fainelli@gmail.comSigned-off-by: Olof Johansson <olof@lixom.net>