media: dt-bindings: Convert Dongwoon dw9807-vcm bindings to json-schema

Convert the old text based dw9807-vcm chip DT bindings to json-schema.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>