media: dt-bindings: qcom,venus: split common properties

All Qualcomm SoC Venus bindings share a lot of properties, so split
common part to re-usable schema to reduce the duplication and promote
unified style.

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