mb/google/poppy/variants/soraka: Tune I2C5 params

This change updates scl_lcnt value for I2C5 to bring the bus frequency
closer to 400kHz.

BUG=b:65062416
TEST=Verified that I2C5 frequency is between 389-396kHz.

Change-Id: Ibaccab0c797174332633cb75e30d18ff5af76a43
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/22788
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/google/poppy/variants/soraka/devicetree.cb b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
index f71a1eb..22349d6 100644
--- a/src/mainboard/google/poppy/variants/soraka/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
@@ -226,7 +226,7 @@
 		.speed = I2C_SPEED_FAST,
 		.speed_config[0] = {
 			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 195,
+			.scl_lcnt = 190,
 			.scl_hcnt = 90,
 			.sda_hold = 36,
 		},