Use more descriptive than numerical value when showing and storing the
McBSP DMA operating mode. Show function is using similar syntax than e.g.
the led triggers so that all possible values for store function are
printed but with current value surrounded with square brackets.
Signed-off-by: NJarkko Nikula <jhnikula@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: NEduardo Valentin <eduardo.valentin@nokia.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>