Add VADC GEN4 channels provided by pmk8550 that are used by thermal
clients on Sun. Also, add the corresponding thermal zone devices.
Change-Id: Ia1eca3b4eb5e95612590ec2405bb366ed170c60a
Signed-off-by: Minghao Zhang <quic_minghao@quicinc.com>
Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com>