This patch adds runtime PM support in this dma driver
for 4 PCI Controllers
Whenever the driver is idle (no channels grabbed), it
can go to low power state
It also adds the PCI suspend and resume support
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>