soc/intel/jasperlake: fix args of dimm_info_fill() for dram_part_num

BUG=b:152019429
BRANCH=None
TEST=1. provision dram_part_num field of CBI
     2. modify mainboard - dedede to report DRAM part number from CBI
     3. check DRAM part number is correct in SMBIOS for memory device

Change-Id: I509d06a81bd005c5afe6e74a2da2ca408dee7b29
Signed-off-by: Marco Chen <marcochen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40833
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
diff --git a/src/soc/intel/jasperlake/romstage/romstage.c b/src/soc/intel/jasperlake/romstage/romstage.c
index b8e9032..dc5dcf1 100644
--- a/src/soc/intel/jasperlake/romstage/romstage.c
+++ b/src/soc/intel/jasperlake/romstage/romstage.c
@@ -108,8 +108,8 @@
 					src_dimm->RankInDimm,
 					channel_info->ChannelId,
 					src_dimm->DimmId,
-					(const char *)src_dimm->ModulePartNum,
-					sizeof(src_dimm->ModulePartNum),
+					dram_part_num,
+					dram_part_num_len,
 					serial_num,
 					meminfo_hob->DataWidth,
 					meminfo_hob->VddVoltage[memProfNum],