ARM: STi: STIH415: Add IR support.

This patch adds IRB support to STiH415 platforms.

Tested on B2000 and B2020 development boards.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>

arch/arm/boot/dts/stih415-pinctrl.dtsi

@@ -120,6 +120,14 @@ st,pins {
 				};
 			};
 
+			rc{
+				pinctrl_ir: ir0 {
+					st,pins {
+						ir = <&PIO4 0 ALT2 IN>;
+					};
+				};
+			};
+
 			gmac1 {
 				pinctrl_mii1: mii1 {
 						st,pins {

arch/arm/boot/dts/stih415.dtsi

@@ -195,5 +195,16 @@ ethernet1: dwmac@fef08000 {
 			clock-names	= "stmmaceth";
 			clocks		= <&CLKS_ETH1_PHY>;
 		};
+
+		rc: rc@fe518000 {
+			compatible	= "st,comms-irb";
+			reg		= <0xfe518000 0x234>;
+			interrupts	=  <0 203 0>;
+			clocks		= <&CLK_SYSIN>;
+			rx-mode		= "infrared";
+			pinctrl-names 	= "default";
+			pinctrl-0	= <&pinctrl_ir>;
+			resets		= <&softreset STIH415_IRB_SOFTRESET>;
+		};
 	};
 };