mb/google/brya/var/redrix{4es}: Set tcc_offset value to 3

The redrix thermal team has determined that the TCC circuit trip
temperature should be set to 97C, therefore, because the offset
is subtracted from 100C, set the `tcc_offset` register in the
devicetree to 3.

BUG=b:200134784
TEST=build and verified by thermal team

Signed-off-by: Wisley Chen <wisley.chen@quanta.corp-partner.google.com>
Change-Id: Ifb63d63bc741b2a402328f256b43bc83e0a88a9e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61003
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

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

@@ -86,6 +86,7 @@ chip soc/intel/alderlake
 			.data_hold_time_ns = 50,
 		},
 	}"
+	register "tcc_offset" = "3"  # TCC of 97C
 	device domain 0 on
 		device ref igpu on
 			chip drivers/gfx/generic

src/mainboard/google/brya/variants/redrix4es/overridetree.cb

@@ -72,6 +72,7 @@ chip soc/intel/alderlake
 			.speed = I2C_SPEED_FAST,
 		},
 	}"
+	register "tcc_offset" = "3"  # TCC of 97C
 	device domain 0 on
 		device ref igpu on
 			chip drivers/gfx/generic