mb/google/rex/var/screebo: Update touchpad I2C timing

Change i2c[3] parameter to meet below timing:
t-HIGH > 600ns;
900ns > Thd:dat > 300ns.

BUG=b:286030723
BRANCH=none
TEST=Test success by EE.

Change-Id: I4b2d958a5a0d41e2cfa1087f5cb94cc83bbb1739
Signed-off-by: Zhongtian Wu <wuzhongtian@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76169
Reviewed-by: Kun Liu <liukun11@huaqin.corp-partner.google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/rex/variants/screebo/overridetree.cb

@@ -95,8 +95,8 @@ chip soc/intel/meteorlake
 		.i2c[3] = {
 			.speed = I2C_SPEED_FAST,
 			.rise_time_ns = 650,
-			.fall_time_ns = 400,
-			.data_hold_time_ns = 50,
+			.fall_time_ns = 150,
+			.data_hold_time_ns = 400,
 		},
 		.i2c[4] = {
 			.early_init = 1,