ARM: dts: at91-sama5d2_xplained: add drive strength for LCD base signals

Set drive strength to medium for LCD base signals to avoid the
"tearing effect".

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>

Author: ldesroches

arch/arm/boot/dts/at91-sama5d2_xplained_common.dtsi

@@ -48,6 +48,7 @@
 #include "sama5d2-pinfunc.h"
 #include <dt-bindings/mfd/atmel-flexcom.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/at91.h>
 
 / {
 	model = "Atmel SAMA5D2 Xplained";
@@ -510,6 +511,7 @@
 						 <PIN_PD1__LCDDEN>,
 						 <PIN_PD0__LCDPCK>;
 					bias-disable;
+					drive-strength = <ATMEL_PIO_DRVSTR_ME>;
 				};
 
 				pinctrl_lcd_pwm: pinctrl_lcd_pwm {