mainboard/google/puff: Toggle on DqPinsInterleaved

BRANCH=none
BUG=b:146172098
TEST=./util/abuild/abuild -p none -t google/hatch -x -a

Change-Id: Ib2da3baace9255ef25c0f03390a064fd77ef9ae5
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37696
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>

src/mainboard/google/hatch/romstage_spd_smbus.c

@@ -45,6 +45,7 @@ void mainboard_memory_init_params(FSPM_UPD *memupd)
 
 	/* set to 2 VREF_CA goes to CH_A and VREF_DQ_B goes to CH_B. */
 	memcfg.vref_ca_config = 2;
+	memcfg.dq_pins_interleaved = 1;
 
 	cannonlake_memcfg_init(&memupd->FspmConfig, &memcfg);
 }