ARM: dts: STiH407-pinctrl: Add i2c2_alt2_1 node

Add missing pin muxing for I2C2 alternate 2. This
i2c2 pin muxing is dedicated for 96board high speed
expansion connector.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
[Lee: Correct spacing between nodes]
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>

arch/arm/boot/dts/stih407-pinctrl.dtsi

@@ -523,6 +523,13 @@ st,pins {
 						scl = <&pio15 5 ALT2 BIDIR>;
 					};
 				};
+
+				pinctrl_i2c2_alt2_1: i2c2-alt2-1 {
+					st,pins {
+						sda = <&pio12 6 ALT2 BIDIR>;
+						scl = <&pio12 5 ALT2 BIDIR>;
+					};
+				};
 			};
 
 			i2c3 {