mb/google/brya/var/kinox: Override tdp pl1 value

Override tdp pl1 value to 30W in CPU MSR.

BUG=b:238268367
TEST=Boot to Chrome OS and check cpu log show "CPU PL1 = 30 Watts".

Signed-off-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Change-Id: Ibbd5ecc4b87ede5a62799020c741e5bff2952144
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65695
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>

src/mainboard/google/brya/variants/kinox/overridetree.cb

@@ -91,6 +91,10 @@ chip soc/intel/alderlake
 		[DDI_PORT_2] = DDI_ENABLE_HPD | DDI_ENABLE_DDC
 	}"
 
+	register "power_limits_config[ADL_P_142_242_282_15W_CORE]" = "{
+		.tdp_pl1_override = 30,
+	}"
+
 	device domain 0 on
 		device ref dtt on
 			chip drivers/intel/dptf