ASoC: fsi: don't use is_play as a parameter of fsi functions

is_play should be kept as local valuable.
it prepare cleanup for DMAEngine support

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
1 file changed