[PATCH] Fix SWSUSP & !SWAP

Swsusp without swap makes no sense, and leads to compilation
failure.  So make the dependency clear in the config files.

arch/i386/Kconfig

@@ -798,7 +798,7 @@ config PM
 
 config SOFTWARE_SUSPEND
 	bool "Software Suspend (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && PM
+	depends on EXPERIMENTAL && PM && SWAP
 	---help---
 	  Enable the possibilty of suspendig machine. It doesn't need APM.
 	  You may suspend your machine by 'swsusp' or 'shutdown -z <time>' 

arch/x86_64/Kconfig

@@ -286,7 +286,7 @@ config PM
 
 config SOFTWARE_SUSPEND
 	bool "Software Suspend (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && PM
+	depends on EXPERIMENTAL && PM && SWAP
 	---help---
 	  Enable the possibilty of suspending the machine. It doesn't need APM.
 	  You may suspend your machine by 'swsusp' or 'shutdown -z <time>'