ARM: dt: tegra seaboard: fix I2C2 SCL rate

This I2C bus is used for EDID/DDC reads and other "slow" I2C devices.
This requires a 100KHz SCL (clock) rate.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/boot/dts/tegra-seaboard.dts b/arch/arm/boot/dts/tegra-seaboard.dts
index 0f30fc9..11aea88 100644
--- a/arch/arm/boot/dts/tegra-seaboard.dts
+++ b/arch/arm/boot/dts/tegra-seaboard.dts
@@ -281,7 +281,7 @@
 	};
 
 	i2c@7000c400 {
-		clock-frequency = <400000>;
+		clock-frequency = <100000>;
 	};
 
 	i2c@7000c500 {