media: venus: Define minimum valid firmware version

Add support for specifying the minimum firmware version required for
correct operation.

When set, the driver compares this value against the version reported by
the firmware: if the firmware is older than required, driver
initialization will fail.

The version check is performed before creating dynamic device tree
nodes, to avoid the need for reverting nodes on failure.

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez@oss.qualcomm.com>
Reviewed-by: Dikshita Agarwal <dikshita.agarwal@oss.qualcomm.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>