ARM: at91: dt: add mmc pinctrl for Atmel reference boards

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/arch/arm/boot/dts/at91sam9g20ek_2mmc.dts b/arch/arm/boot/dts/at91sam9g20ek_2mmc.dts
index 684b229..66467b1 100644
--- a/arch/arm/boot/dts/at91sam9g20ek_2mmc.dts
+++ b/arch/arm/boot/dts/at91sam9g20ek_2mmc.dts
@@ -15,12 +15,26 @@
 	ahb {
 		apb{
 			mmc0: mmc@fffa8000 {
+				/* clk already mux wuth slot0 */
+				pinctrl-0 = <
+					&pinctrl_board_mmc0_slot0
+					&pinctrl_mmc0_slot0_cmd_dat0
+					&pinctrl_mmc0_slot0_dat1_3>;
 				slot@0 {
 					reg = <0>;
 					bus-width = <4>;
 					cd-gpios = <&pioC 2 0>;
 				};
 			};
+
+			pinctrl@fffff400 {
+				mmc0_slot0 {
+					pinctrl_board_mmc0_slot0: mmc0_slot0-board {
+						atmel,pins =
+							<2 2 0x0 0x5>;	/* PC2 gpio CD pin pull up and deglitch */
+					};
+				};
+			};
 		};
 	};