ARM: DT: STiH407: Add i2s_in pinctrl configuration

This patch adds the pinctrl config for the i2s_in pins
used by the uniperif reader IP.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>

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

@@ -1107,6 +1107,30 @@
 				};
 			};
 
+			i2s_in {
+				pinctrl_i2s_8ch_in: i2s_8ch_in{
+					st,pins {
+						mclk = <&pio32 5 ALT1 IN>;
+						lrclk = <&pio32 7 ALT1 IN>;
+						sclk = <&pio32 6 ALT1 IN>;
+						data0 = <&pio32 4 ALT1 IN>;
+						data1 = <&pio33 0 ALT1 IN>;
+						data2 = <&pio33 1 ALT1 IN>;
+						data3 = <&pio33 2 ALT1 IN>;
+						data4 = <&pio33 3 ALT1 IN>;
+					};
+				};
+
+				pinctrl_i2s_2ch_in: i2s_2ch_in{
+					st,pins {
+						mclk = <&pio32 5 ALT1 IN>;
+						lrclk = <&pio32 7 ALT1 IN>;
+						sclk = <&pio32 6 ALT1 IN>;
+						data0 = <&pio32 4 ALT1 IN>;
+					};
+				};
+			};
+
 			serial3 {
 				pinctrl_serial3: serial3-0 {
 					st,pins {