mb/starlabs/starbook/mtl: Add rcomp configuration

Add rcomp configuration values taken from the AMI CRB. This fixes
failed memory training for certain memory modules.

Change-Id: If7a29bbd015d45eac178480ba6cae42912e25195
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86307
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

src/mainboard/starlabs/starbook/variants/mtl/romstage.c

@@ -13,6 +13,10 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 		.UserBd = BOARD_TYPE_MOBILE,
 		.ddr_config = {
 			.dq_pins_interleaved = false,
+		},
+		.rcomp = {
+			.resistor = 100,
+			.targets = {70, 30, 25, 25, 25},
 		}
 	};