ASoC: rsnd: depends on OF

Current Renesas sound driver is completely depends on CONFIG_OF

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/Kconfig

@@ -37,6 +37,7 @@ config SND_SOC_SH4_SIU
 config SND_SOC_RCAR
 	tristate "R-Car series SRU/SCU/SSIU/SSI support"
 	depends on COMMON_CLK
+	depends on OF
 	select SND_SIMPLE_CARD
 	select REGMAP_MMIO
 	help