[SPARC]: introduce a SPARC Kconfig symbol

Introduce a Kconfig symbol SPARC that is defined on both the sparc and
sparc64 architectures.

This symbol makes some dependencies more readable.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/sound/sparc/Kconfig b/sound/sparc/Kconfig
index 09ab138..ef022a8 100644
--- a/sound/sparc/Kconfig
+++ b/sound/sparc/Kconfig
@@ -1,7 +1,7 @@
 # ALSA Sparc drivers
 
 menu "ALSA Sparc devices"
-	depends on SND!=n && (SPARC32 || SPARC64)
+	depends on SND!=n && SPARC
 
 config SND_SUN_AMD7930
 	tristate "Sun AMD7930"