mb/google/zork: adjust i2c2 data hold time for TP

current setting got 0.278us which is less than the min 0.3us.
increase i2c2 data hold time for TP.

BUG=b:163613330
BRANCH=master
TEST=1. emerge-zork coreboot chromeos-bootimage
     2. data hold time measured by scope: 0.3805us

Change-Id: I2d564983383c17ed43cc5cc5aaff0fcd67ce6928
Signed-off-by: Kevin Chiu <kevin.chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44405
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/mainboard/google/zork/variants/berknip/overridetree.cb

@@ -27,6 +27,7 @@ chip soc/amd/picasso
 		.speed = I2C_SPEED_FAST,
 		.rise_time_ns = 3,
 		.fall_time_ns = 2,
+		.data_hold_time_ns = 400,
 	}"
 
 	# Enable I2C3 for H1 400kHz