ASoC: atmel-ssc: make it buildable on other architectures

Not very useful on non AT91/AVR32 platforms but it provides
more build coverage and prepares for ARM multiplatform.

Also fixes a truncated warning that would come when
building on a 64-bit arch.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index b151b7c..8f59d88 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -192,7 +192,7 @@
 
 config ATMEL_SSC
 	tristate "Device driver for Atmel SSC peripheral"
-	depends on AVR32 || ARCH_AT91
+	depends on HAS_IOMEM
 	---help---
 	  This option enables device driver support for Atmel Synchronized
 	  Serial Communication peripheral (SSC).