[IA64] Fix uniprocessor build w.r.t. SGI_XP and SGI_GRU

The SGI XP and GRU drivers only work on SMP systems ... the Kconfig
file only disallowed them for non-SMP X86.
Signed-off-by: Tony Luck <tony.luck@intel.com>

drivers/misc/Kconfig

@@ -427,10 +427,10 @@ config ENCLOSURE_SERVICES
 config SGI_XP
 	tristate "Support communication between SGI SSIs"
 	depends on NET
-	depends on IA64_GENERIC || IA64_SGI_SN2 || IA64_SGI_UV || (X86_64 && SMP)
+	depends on (IA64_GENERIC || IA64_SGI_SN2 || IA64_SGI_UV || X86_64) && SMP
 	select IA64_UNCACHED_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
 	select GENERIC_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
-	select SGI_GRU if IA64_GENERIC || IA64_SGI_UV || (X86_64 && SMP)
+	select SGI_GRU if (IA64_GENERIC || IA64_SGI_UV || X86_64) && SMP
 	---help---
 	  An SGI machine can be divided into multiple Single System
 	  Images which act independently of each other and have