Add device start/stop functions for DSA devices bound to vfio. For devices
bound to the IDXD kernel driver, these are not required since the IDXD
kernel driver takes care of this.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>