mfd: dln2: Add start/stop RX URBs helpers

This is in preparation for adding suspend / resume support.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
1 file changed