soc/intel/meteorlake: Enable FSP multiphase

This patch changes the UPD EnableMultiPhaseSiliconInit to enable the
Meteor Lake FSP multiphase flow.

BUG=b:247670186
TEST=Able to build and boot Google, Rex with MultiPhaseSiInit Enable.

[SPEW ]  Executing Phase 1 of FspMultiPhaseSiInit
[DEBUG]  FSP MultiPhaseSiInit src/soc/intel/meteorlake/
         fsp_params.c/platform_fsp_multi_phase_init_cb called
[DEBUG]  port C0 DISC req: usage 1 usb3 1 usb2 2
[DEBUG]  Raw Buffer output 0 00000211
[DEBUG]  Raw Buffer output 1 00000000
[DEBUG]  pmc_send_ipc_cmd succeeded
[DEBUG]  port C1 DISC req: usage 1 usb3 3 usb2 4
[DEBUG]  Raw Buffer output 0 00000431
[DEBUG]  Raw Buffer output 1 00000000
[DEBUG]  pmc_send_ipc_cmd succeeded

Change-Id: I759c0ecee29c07bae4abe6b56d015e7253bd49fe
Signed-off-by: zhaojohn <john.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67741
Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Reviewed-by: Jamie Ryu <jamie.m.ryu@intel.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
diff --git a/src/soc/intel/meteorlake/fsp_params.c b/src/soc/intel/meteorlake/fsp_params.c
index 4fe2f63..4429dc0 100644
--- a/src/soc/intel/meteorlake/fsp_params.c
+++ b/src/soc/intel/meteorlake/fsp_params.c
@@ -394,10 +394,10 @@
 
 static void arch_silicon_init_params(FSPS_ARCH_UPD *s_arch_cfg)
 {
-	/* UPDATEME: Disable for VP
+	/*
 	 * EnableMultiPhaseSiliconInit for running MultiPhaseSiInit
 	 */
-	s_arch_cfg->EnableMultiPhaseSiliconInit = 0;
+	s_arch_cfg->EnableMultiPhaseSiliconInit = 1;
 
 	/* Assign FspEventHandler arch Upd to use coreboot debug event handler */
 	if (CONFIG(FSP_USES_CB_DEBUG_EVENT_HANDLER) && CONFIG(CONSOLE_SERIAL) &&