[IA64] CONFIG_SGI_SN2 - auto select NUMA and ACPI_NUMA

Auto select CONFIG_NUMA and CONFIG_ACPI_NUMA when picking SN2, similar
to how they are selected automatically for CONFIG_IA64_GENERIC.
Signed-off-by: NJes Sorensen <jes@sgi.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>

arch/ia64/Kconfig

@@ -155,6 +155,8 @@ config IA64_HP_ZX1_SWIOTLB
 
 config IA64_SGI_SN2
 	bool "SGI-SN2"
+	select NUMA
+	select ACPI_NUMA
 	help
 	  Selecting this option will optimize the kernel for use on sn2 based
 	  systems, but the resulting kernel binary will not run on other