soc/intel/mtl: Hook up ECT FSP UPD

Hook up ECT FSP UPD for Intel MeteorLake.

BUG=b:243734885
TEST=Built and booted on Google Rex. Verified the UPD value in MRC log.

Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Change-Id: Idc23717c3ce52e3635e2da41733058f912545e5f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67051
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maulik Vaghela <maulikvaghela@google.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>

src/soc/intel/meteorlake/meminit.c

@@ -196,6 +196,7 @@ void memcfg_init(FSPM_UPD *memupd, const struct mb_cfg *mb_cfg,
 	bool dq_dqs_auto_detect = false;
 	FSP_M_CONFIG *mem_cfg = &memupd->FspmConfig;
 
+	mem_cfg->ECT = mb_cfg->ect;
 	mem_cfg->UserBd = mb_cfg->UserBd;
 	set_rcomp_config(mem_cfg, mb_cfg);