ASoC: atmel-ssc-dai: register dai and pcm directly

change the method for register dai and pcm
  - let the atmel-ssc-dai no longer as a standalone platform device
  - remap ssc and then register dai directly
  - register pcm from dai directly
  - modify the code which related with this change

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/atmel/atmel-pcm.h b/sound/soc/atmel/atmel-pcm.h
index 5e0a95e..e6d67b3 100644
--- a/sound/soc/atmel/atmel-pcm.h
+++ b/sound/soc/atmel/atmel-pcm.h
@@ -80,4 +80,7 @@
 #define ssc_readx(base, reg)            (__raw_readl((base) + (reg)))
 #define ssc_writex(base, reg, value)    __raw_writel((value), (base) + (reg))
 
+int atmel_pcm_platform_register(struct device *dev);
+void atmel_pcm_platform_unregister(struct device *dev);
+
 #endif /* _ATMEL_PCM_H */