ASoC: Fix recursive dependency due to select ATMEL_SSC in SND_ATMEL_SOC_SSC

commit 739be96a "ASoC: Fix build dependency for SND_ATMEL_SOC_SSC"
introduces below build warnings:

drivers/misc/Kconfig:212:error: recursive dependency detected!
drivers/misc/Kconfig:212:       symbol ATMEL_SSC is selected by SND_ATMEL_SOC_SSC
sound/soc/atmel/Kconfig:9:      symbol SND_ATMEL_SOC_SSC is selected by SND_AT91_SOC_SAM9G20_WM8731
sound/soc/atmel/Kconfig:18:     symbol SND_AT91_SOC_SAM9G20_WM8731 depends on ATMEL_SSC

SND_ATMEL_SOC_SSC needs ATMEL_SSC to pass compilation.
This patch remove the "select ATMEL_SSC" from SND_ATMEL_SOC_SSC to avoid above
warnings. And then ensures all the machine drivers that select SND_ATMEL_SOC_SSC
need to depend on ATMEL_SSC.
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/atmel/Kconfig

@@ -9,7 +9,6 @@ config SND_ATMEL_SOC
 config SND_ATMEL_SOC_SSC
 	tristate
 	depends on SND_ATMEL_SOC
-	select ATMEL_SSC
 	help
 	  Say Y or M if you want to add support for codecs the
 	  ATMEL SSC interface. You will also needs to select the individual
@@ -27,7 +26,7 @@ config SND_AT91_SOC_SAM9G20_WM8731
 
 config SND_AT91_SOC_AFEB9260
 	tristate "SoC Audio support for AFEB9260 board"
-	depends on ARCH_AT91 && MACH_AFEB9260 && SND_ATMEL_SOC
+	depends on ATMEL_SSC && ARCH_AT91 && MACH_AFEB9260 && SND_ATMEL_SOC
 	select SND_ATMEL_SOC_SSC
 	select SND_SOC_TLV320AIC23
 	help