mb/google/sarien/variants/arcada: Set data hold time for touchpad

Elan's touchpad requires min 0.3us data hold time.
To fine tune the data hold time of i2c1 to meet
specification of Elan's touchpad.

BUG=None
BRANCH=None
TEST=Verified data hold time of i2c1 is around 320ns

Signed-off-by: Casper Chang <casper_chang@wistron.corp-partner.google.com>
Change-Id: I0fa9db3b50e74f193261be96bd9e305bb19841e3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34288
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Crews <ncrews@google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

src/mainboard/google/sarien/variants/arcada/devicetree.cb

@@ -175,6 +175,7 @@ chip soc/intel/cannonlake
 			.speed = I2C_SPEED_FAST,
 			.rise_time_ns = 52,
 			.fall_time_ns = 110,
+			.data_hold_time_ns = 330,
 		},
 		.i2c[4] = {
 			.early_init = 1,