Pull devicetree updates from Rob Herring:

- Update dtc to upstream version v1.6.0-31-gcbca977ea121

- dtx_diff help text reformatting

- Speed-up validation time for binding and dtb checks using json for
intermediate files

- Add support for running yamllint on DT schema files

- Remove old booting-without-of.rst

- Extend the example schema to address common issues

- Cleanup handling of additionalProperties/unevaluatedProperties

- Ensure all DSI controller schemas reference dsi-controller.yaml

- Vendor prefixes for Zealz, Wandbord/Technexion, Embest RIoT, Rex,
DFI, and Cisco Meraki

- Convert at25, SPMI bus, TI hwlock, HiSilicon Hi3660 USB3 PHY, Arm
SP805 watchdog, Arm SP804, and Samsung 11-pin USB connector to DT
schema

- Convert HiSilicon SoC and syscon bindings to DT schema

- Convert SiFive Risc-V L2 cache, PLIC, PRCI, and PWM to DT schema

- Convert i.MX bindings for w1, crypto, rng, SIM, PM, DDR, SATA, vf610
GPIO, and UART to DT schema

- Add i.MX 8M compatible strings

- Add LM81 and DS1780 as trivial devices

- Various missing properties added to fix dtb validation warnings

* tag 'devicetree-for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (111 commits)
dt-bindings: misc: explicitly add #address-cells for slave mode
spi: dt-bindings: spi-controller: explicitly require #address-cells= for slave mode
dt: Remove booting-without-of.rst
dt-bindings: update usb-c-connector example
dt-bindings: arm: hisilicon: add missing properties into cpuctrl.yaml
dt-bindings: arm: hisilicon: add missing properties into sysctrl.yaml
dt-bindings: pwm: imx: document i.MX compatibles
scripts/dtc: Update to upstream version v1.6.0-31-gcbca977ea121
dt-bindings: Add running yamllint to dt_binding_check
dt-bindings: powerpc: Add a schema for the 'sleep' property
dt-bindings: pinctrl: sirf: Fix typo abitrary
dt-bindings: pinctrl: qcom: Fix typo abitrary
dt-bindings: Explicitly allow additional properties in common schemas
dt-bindings: Use 'additionalProperties' instead of 'unevaluatedProperties'
dt-bindings: Add missing 'unevaluatedProperties'
Docs: Fixing spelling errors in Documentation/devicetree/bindings/
dt-bindings: arm: hisilicon: convert Hi6220 domain controller bindings to json-schema
dt-bindings: riscv: convert pwm bindings to json-schema
dt-bindings: riscv: convert plic bindings to json-schema
dt-bindings: fu540: prci: convert PRCI bindings to json-schema
...