[PATCH -next] ASoC: atmel: Fix build error

[YueHaibing]

when do randbuilding, I got this error:

sound/soc/atmel/atmel_ssc_dai.o: In function `atmel_ssc_set_audio':
(.text+0x12f6): undefined reference to `atmel_pcm_pdc_platform_register'

This is because SND_ATMEL_SOC_SSC_DMA=y, SND_ATMEL_SOC_SSC=y,
but SND_ATMEL_SOC_SSC_PDC=m. Fix it bt reintroducing the default Kconfig.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Fixes: 18291410557f ("ASoC: atmel: enable SOC_SSC_PDC and SOC_SSC_DMA in Kconfig")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 sound/soc/atmel/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig
index f118c22..79e45f2 100644
--- a/sound/soc/atmel/Kconfig
+++ b/sound/soc/atmel/Kconfig
@@ -12,10 +12,14 @@ if SND_ATMEL_SOC
 config SND_ATMEL_SOC_PDC
 	tristate
 	depends on HAS_DMA
+	default m if SND_ATMEL_SOC_SSC_PDC=m && SND_ATMEL_SOC_SSC=m
+	default y if SND_ATMEL_SOC_SSC_PDC=y || (SND_ATMEL_SOC_SSC_PDC=m && SND_ATMEL_SOC_SSC=y)
 
 config SND_ATMEL_SOC_DMA
 	tristate
 	select SND_SOC_GENERIC_DMAENGINE_PCM
+	default m if SND_ATMEL_SOC_SSC_DMA=m && SND_ATMEL_SOC_SSC=m
+	default y if SND_ATMEL_SOC_SSC_DMA=y || (SND_ATMEL_SOC_SSC_DMA=m && SND_ATMEL_SOC_SSC=y)
 
 config SND_ATMEL_SOC_SSC
 	tristate
-- 
2.7.4