Adds implementation of the new INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS
instruction. This patch also adds data for digital subdevices that are
streaming capable (within the ni_mio_* family). Mostly, only the m-series
devices are capable of digital streaming.
Signed-off-by: Spencer E. Olson <olsonse@umich.edu> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>