ARM: dts: stm32: add sdmmc2 pins for STM32MP13

Those pins are used for SDIO on STM32MP135F-DK board.
Signed-off-by: NYann Gautier <yann.gautier@foss.st.com>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@foss.st.com>

arch/arm/boot/dts/stm32mp13-pinctrl.dtsi

@@ -57,6 +57,57 @@
 		};
 	};
 
+	sdmmc2_b4_pins_a: sdmmc2-b4-0 {
+		pins {
+			pinmux = <STM32_PINMUX('B', 14, AF10)>, /* SDMMC2_D0 */
+				 <STM32_PINMUX('B', 15, AF10)>, /* SDMMC2_D1 */
+				 <STM32_PINMUX('B', 3, AF10)>, /* SDMMC2_D2 */
+				 <STM32_PINMUX('B', 4, AF10)>, /* SDMMC2_D3 */
+				 <STM32_PINMUX('G', 6, AF10)>; /* SDMMC2_CMD */
+			slew-rate = <1>;
+			drive-push-pull;
+			bias-pull-up;
+		};
+	};
+
+	sdmmc2_b4_od_pins_a: sdmmc2-b4-od-0 {
+		pins1 {
+			pinmux = <STM32_PINMUX('B', 14, AF10)>, /* SDMMC2_D0 */
+				 <STM32_PINMUX('B', 15, AF10)>, /* SDMMC2_D1 */
+				 <STM32_PINMUX('B', 3, AF10)>, /* SDMMC2_D2 */
+				 <STM32_PINMUX('B', 4, AF10)>; /* SDMMC2_D3 */
+			slew-rate = <1>;
+			drive-push-pull;
+			bias-pull-up;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('G', 6, AF10)>; /* SDMMC2_CMD */
+			slew-rate = <1>;
+			drive-open-drain;
+			bias-pull-up;
+		};
+	};
+
+	sdmmc2_b4_sleep_pins_a: sdmmc2-b4-sleep-0 {
+		pins {
+			pinmux = <STM32_PINMUX('B', 14, ANALOG)>, /* SDMMC2_D0 */
+				 <STM32_PINMUX('B', 15, ANALOG)>, /* SDMMC2_D1 */
+				 <STM32_PINMUX('B', 3, ANALOG)>, /* SDMMC2_D2 */
+				 <STM32_PINMUX('B', 4, ANALOG)>, /* SDMMC2_D3 */
+				 <STM32_PINMUX('E', 3, ANALOG)>, /* SDMMC2_CK */
+				 <STM32_PINMUX('G', 6, ANALOG)>; /* SDMMC2_CMD */
+		};
+	};
+
+	sdmmc2_clk_pins_a: sdmmc2-clk-0 {
+		pins {
+			pinmux = <STM32_PINMUX('E', 3, AF10)>; /* SDMMC2_CK */
+			slew-rate = <1>;
+			drive-push-pull;
+			bias-pull-up;
+		};
+	};
+
 	uart4_pins_a: uart4-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('D', 6, AF8)>; /* UART4_TX */