sb/intel/i82801dx,ix: Replace SMM_ASEG conditional

PARALLEL_MP path also calls smm_lock().

Change-Id: I270fc8266d118cd1e7245ea70b707a03aedac209
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36789
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/southbridge/intel/i82801dx/lpc.c b/src/southbridge/intel/i82801dx/lpc.c
index 031a01a..a46f5a3 100644
--- a/src/southbridge/intel/i82801dx/lpc.c
+++ b/src/southbridge/intel/i82801dx/lpc.c
@@ -304,7 +304,7 @@
 	/* Don't allow evil boot loaders, kernels, or
 	 * userspace applications to deceive us:
 	 */
-	if (CONFIG(HAVE_SMI_HANDLER))
+	if (CONFIG(HAVE_SMI_HANDLER) && !CONFIG(PARALLEL_MP))
 		aseg_smm_lock();
 }