ASoC: stm32: Add SPDIFRX support

Add SPDIFRX support to STM32.

Signed-off-by: olivier moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/stm/Kconfig b/sound/soc/stm/Kconfig
index 23600a5..3398e6c 100644
--- a/sound/soc/stm/Kconfig
+++ b/sound/soc/stm/Kconfig
@@ -18,4 +18,14 @@
 	help
 	  Say Y if you want to enable I2S for STM32
 
+config SND_SOC_STM32_SPDIFRX
+	tristate "STM32 S/PDIF receiver (SPDIFRX) support"
+	depends on ARCH_STM32 || COMPILE_TEST
+	depends on SND_SOC
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	select REGMAP_MMIO
+	select SND_SOC_SPDIF
+	help
+	  Say Y if you want to enable S/PDIF capture for STM32
+
 endmenu