mb/google/brya/var/lisbon: Update audio codec i2c timing

Adjust audio codec i2c timing to 399 kHz.

BUG=b:263050944
TEST=FW_NAME=lisbon emerge-brask coreboot

Signed-off-by: Kevin Chiu <kevin.chiu.17802@gmail.com>
Change-Id: I8495a88f2034e5e4ccf28ff53c81e0d6561e2e0f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70898
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ricky Chang <rickytlchang@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
diff --git a/src/mainboard/google/brya/variants/lisbon/overridetree.cb b/src/mainboard/google/brya/variants/lisbon/overridetree.cb
index 7524b67..86e4b69 100644
--- a/src/mainboard/google/brya/variants/lisbon/overridetree.cb
+++ b/src/mainboard/google/brya/variants/lisbon/overridetree.cb
@@ -23,7 +23,7 @@
 	register "common_soc_config" = "{
 		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
-			.rise_time_ns = 650,
+			.rise_time_ns = 600,
 			.fall_time_ns = 400,
 			.data_hold_time_ns = 50,
 		},