soc/intel/common: Replace smm_soutbridge_enable(SMI_FLAGS)

Change-Id: I8c4dc5ab91891de9737189bd7ae86df18d86f758
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41960
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/intel/skylake/cpu.c

@@ -294,7 +294,7 @@ static void post_mp_init(void)
 	 * Now that all APs have been relocated as well as the BSP let SMIs
 	 * start flowing.
 	 */
-	smm_southbridge_enable(GBL_EN);
+	global_smi_enable_no_pwrbtn();
 
 	/* Lock down the SMRAM space. */
 	if (CONFIG(HAVE_SMI_HANDLER))