dt-bindings: soc: bcm: Convert brcm,bcm2835-vchiq to json-schema

This converts the VCHIQ bindings to YAML format.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Co-developed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Signed-off-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211215094448.280796-1-nsaenz@kernel.org