[IA64] setup.c Typo fix "Architechtuallly"

s/Architechtuallly/Architecturally/

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index dbc4cbe..77db0b5 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -592,7 +592,7 @@
 	/*
 	 * Don't check status. The SAL call is not supported on all PROMs
 	 * but a failure is harmless.
-	 * Architechtuallly, cpu_init is always called twice on cpu 0. We
+	 * Architecturally, cpu_init is always called twice on cpu 0. We
 	 * should set cpu_number on cpu 0 once.
 	 */
 	if (cpuid == 0) {