[ALSA] soc - ASoC 0.13 AT91xxxx slave patch

This patch adds support for I2S slave mode for the ETI_B1 machine from
Endrelia.
Signed-off-by: NFrank Mandarino <fmandarino@endrelia.com>
Signed-off-by: NLiam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

sound/soc/at91/Kconfig

@@ -13,12 +13,20 @@ config SND_AT91_SOC_I2S
 	tristate
 
 config SND_AT91_SOC_ETI_B1_WM8731
-	tristate "SoC I2S Audio support for Endrelia ETI-B1 board"
-	depends on SND_AT91_SOC && MACH_ETI_B1
+	tristate "SoC I2S Audio support for WM8731-based Endrelia ETI-B1 boards"
+	depends on SND_AT91_SOC && (MACH_ETI_B1 || MACH_ETI_C1)
 	select SND_AT91_SOC_I2S
 	select SND_SOC_WM8731
 	help
-	  Say Y if you want to add support for SoC audio on Endrelia
-          ETI-B1 board.
+	  Say Y if you want to add support for SoC audio on WM8731-based
+	  Endrelia Technologies Inc ETI-B1 or ETI-C1 boards.
+
+config SND_AT91_SOC_ETI_SLAVE
+	bool "Run codec in slave Mode on Endrelia boards"
+	depends on SND_AT91_SOC_ETI_B1_WM8731
+	default n
+	help
+	  Say Y if you want to run with the AT91 SSC generating the BCLK
+	  and LRC signals on Endrelia boards.
 
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