soc/intel: Add node_num to dimm_info struct + adjust dimm_info_fill

The dimm_info structure (defined in src/include/memory_info.h)
currently does not hold information about the DIMM's
node/controller ID.

This patch extends the dimm_info structure by adding a new field for
the node ID, called node_num. Also, adapt the dimm_info_fill()
function accordingly to populate the newly-added field.

Background: These changes are necessary for the Atlas mainboard, where
we are currently experiencing issues with the DIMMs device/bank
locator. Our 2 DIMMs share the same CHANNEL and DIMM ID but have a
distinct NODE ID. By looking at the smbios table we see
Channel-0-DIMM-0 for both DIMMs. Thus, we need their NODE IDs in order
to distinguish them.

This patch was tested by building and booting for the Alderlake-P
RVP board, which has the same DIMM slot configuration as the
Prodrive Atlas mainboard.

Signed-off-by: David Milosevic <David.Milosevic@9elements.com>
Change-Id: I6ffa5bdff0ba0e3c4a4a51f2419291fd1278cd68
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68525
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/cannonlake/romstage/romstage.c

@@ -107,7 +107,8 @@ static void save_dimm_info(void)
 				memory_info_hob->VddVoltage[memProfNum],
 				memory_info_hob->EccSupport,
 				src_dimm->MfgId,
-				src_dimm->SpdModuleType);
+				src_dimm->SpdModuleType,
+				0);
 			index++;
 		}
 	}