ASoC: rsnd: use inclusive language for DAIFMT mask

It is still using discriminatory terms on DAIFMT mask.
This patch tidyup it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87ilropdu9.wl-kuninori.morimoto.gx@renesas.com


Signed-off-by: Mark Brown <broonie@kernel.org>