mp_init: fix typo

BUG=none
TEST=none

Change-Id: Ic2d7bf5f5335894ede98dc7e6cc6a65e4897e487
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/27811
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

src/cpu/x86/mp_init.c

@@ -944,7 +944,7 @@ static void ap_wait_for_instruction(void)
 			continue;
 		}
 
-		/* Copy to local variable before signalling consumption. */
+		/* Copy to local variable before signaling consumption. */
 		memcpy(&lcb, cb, sizeof(lcb));
 		mfence();
 		store_callback(per_cpu_slot, NULL);