ASoC: rsnd: tidyup brga/brgb default value

default value for brga/brgb should be 0xff instead of 0x2.
This patch tidyup it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87jztmzlew.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/adg.c

@@ -502,8 +502,8 @@ static int rsnd_adg_get_clkout(struct rsnd_priv *priv)
 	};
 
 	ckr = 0;
-	brga = 2; /* default 1/6 */
-	brgb = 2; /* default 1/6 */
+	brga = 0xff; /* default */
+	brgb = 0xff; /* default */
 
 	/*
 	 * ADG supports BRRA/BRRB output only