[IA64] enable SGI simulator for generic kernels

Allow the SGI simulator (medusa) to work on generic kernels.  There is
no inherent dependency on an sn2-specific kernel.

Boot tested on Altix, medusa and HP rx2600.

Signed-off-by: Greg Edwards <edwardsg@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/Kconfig

@@ -216,7 +216,7 @@ config IOSAPIC
 
 config IA64_SGI_SN_SIM
 	bool "SGI Medusa Simulator Support"
-	depends on IA64_SGI_SN2
+	depends on IA64_SGI_SN2 || IA64_GENERIC
 	help
 	  If you are compiling a kernel that will run under SGI's IA-64
 	  simulator (Medusa) then say Y, otherwise say N.