src/arch: Fix typo

Change-Id: I24d219b4ce6033f64886e22973ca8716113d319f
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/27919
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

src/arch/x86/thread.c

@@ -47,7 +47,7 @@ void arch_prepare_thread(struct thread *t,
 	stack = push_stack(stack, (uintptr_t)arg);
 	stack = push_stack(stack, (uintptr_t)0);
 	stack = push_stack(stack, (uintptr_t)thread_entry);
-	/* Make room for the registers. Ignore intial values. */
+	/* Make room for the registers. Ignore initial values. */
 	stack -= sizeof(struct pushad_regs);
 
 	t->stack_current = stack;