ARM: at91/dt: sama5d4: Add pinmux for 8-bit MMC0 bus

Add pinmux for the 4 remaining signals used in 8-bit MMC 0
bus configuration.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reviewed-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/sama5d4.dtsi

@@ -1680,6 +1680,14 @@
 							 AT91_PIOC 9 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* MCI0_DA3, conflict with NAND_D4 */
 							>;
 					};
+					pinctrl_mmc0_dat4_7: mmc0_dat4_7 {
+						atmel,pins =
+							<AT91_PIOC 10 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* MCI0_DA4, conflict with NAND_D5 */
+							 AT91_PIOC 11 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* MCI0_DA5, conflict with NAND_D6 */
+							 AT91_PIOC 12 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* MCI0_DA6, conflict with NAND_D7 */
+							 AT91_PIOC 13 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* MCI0_DA7, conflict with NAND_OE */
+							>;
+					};
 				};
 
 				mmc1 {