[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/drivers/char/Kconfig b/drivers/char/Kconfig
index 696f727..84e68cd 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -687,7 +687,7 @@
 
 config RTC
 	tristate "Enhanced Real Time Clock Support"
-	depends on !PPC32 && !PARISC && !IA64 && !M68K && (!(SPARC32 || SPARC64) || PCI)
+	depends on !PPC32 && !PARISC && !IA64 && !M68K && (!SPARC || PCI)
 	---help---
 	  If you say Y here and create a character special file /dev/rtc with
 	  major number 10 and minor number 135 using mknod ("man mknod"), you
@@ -735,7 +735,7 @@
 
 config GEN_RTC
 	tristate "Generic /dev/rtc emulation"
-	depends on RTC!=y && !IA64 && !ARM && !M32R && !SPARC32 && !SPARC64
+	depends on RTC!=y && !IA64 && !ARM && !M32R && !SPARC
 	---help---
 	  If you say Y here and create a character special file /dev/rtc with
 	  major number 10 and minor number 135 using mknod ("man mknod"), you