By this allows us to fetch the device list/info w/o the revision field. At the moment retrieving the latter wakes up the device. Note: kernel patch to resolve that should be in 4.10. Signed-off-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> Tested-by: Mike Lothian <mike@fireburn.co.uk>