Prepare for removal of ib_device.dma_device.
Signed-off-by: NBart Van Assche <bart.vanassche@sandisk.com>
Cc: Selvin Xavier <selvin.xavier@avagotech.com>
Cc: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>