mb/google/fatcat/var/lapis: configure chipset_lockdown for lapis

Configure lapis to use coreboot (CHIPSET_LOCKDOWN_COREBOOT) to set BIOS
interface lock. Otherwise, FSP code will be responsible for locking the
chipset.

BUG=None
TEST=Able to build and boot lapis

Change-Id: Ia3a13390e4a1862164d820dd1ee220dea682a6a0
Signed-off-by: Pranava Y N <pranavayn@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91177
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Avi Uday <aviuday@google.com>

src/mainboard/google/fatcat/variants/lapis/overridetree.cb

@@ -111,6 +111,7 @@ chip soc/intel/pantherlake
 	#| I2C3              | cr50 TPM.                 |
 	#+-------------------+---------------------------+
 	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
 		.i2c[3] = {
 			.early_init=1,
 			.speed = I2C_SPEED_FAST,