ARM: dts: stm32: Add I2C1 support for STM32F746 eval board

This patch adds I2C1 support for STM32F746 eval board

Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32746g-eval.dts

@@ -93,6 +93,14 @@
 	status = "okay";
 };
 
+&i2c1 {
+	pinctrl-0 = <&i2c1_pins_b>;
+	pinctrl-names = "default";
+	i2c-scl-rising-time-ns = <185>;
+	i2c-scl-falling-time-ns = <20>;
+	status = "okay";
+};
+
 &rtc {
 	status = "okay";
 };