ASoC: rsnd: use clkin/out_size

Current adg.c is assuming number of clkin/clkout are fixed, but it is
not correct on Gen4. This patch uses clkin/out_size to handling it.

This is prepare for R-Car Gen4 support.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87v8km5em7.wl-kuninori.morimoto.gx@renesas.com


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