ARM: at91: at91sam9n12: add pinctrl of TWI

Add pinctrl of TWI for at91sam9n12 SoC.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91sam9n12.dtsi

@@ -291,6 +291,22 @@ AT91_PIOA 22 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PA22 periph B SPI1_MOSI pin */
 					};
 				};
 
+				i2c0 {
+					pinctrl_i2c0: i2c0-0 {
+						atmel,pins =
+							<AT91_PIOA 30 AT91_PERIPH_A AT91_PINCTRL_NONE
+							 AT91_PIOA 31 AT91_PERIPH_A AT91_PINCTRL_NONE>;
+					};
+				};
+
+				i2c1 {
+					pinctrl_i2c1: i2c1-0 {
+						atmel,pins =
+							<AT91_PIOC 0 AT91_PERIPH_C AT91_PINCTRL_NONE
+							 AT91_PIOC 1 AT91_PERIPH_C AT91_PINCTRL_NONE>;
+					};
+				};
+
 				tcb0 {
 					pinctrl_tcb0_tclk0: tcb0_tclk0-0 {
 						atmel,pins = <AT91_PIOA 24 AT91_PERIPH_A AT91_PINCTRL_NONE>;
@@ -471,6 +487,8 @@ i2c0: i2c@f8010000 {
 				dma-names = "tx", "rx";
 				#address-cells = <1>;
 				#size-cells = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_i2c0>;
 				status = "disabled";
 			};
 
@@ -483,6 +501,8 @@ i2c1: i2c@f8014000 {
 				dma-names = "tx", "rx";
 				#address-cells = <1>;
 				#size-cells = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_i2c1>;
 				status = "disabled";
 			};