ARM: dts: am335x-nano: Fix GPIO settings for MMC pins

The MMC slot uses GPIO pins for Write Protext and Card Detect.
Define these so everything works correctly.

Signed-off-by: Mark Jackson <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Tony Lindgren <[e-mail]>

arch/arm/boot/dts/am335x-nano.dts

···
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc1_pins>;
 	bus-width = <4>;
-	cd-gpios = <&gpio3 8 0>;
-	wp-gpios = <&gpio3 18 0>;
+	cd-debounce-delay-ms = <5>;
+	cd-gpios = <&gpio3 8 GPIO_ACTIVE_LOW>;
+	wp-gpios = <&gpio3 18 GPIO_ACTIVE_HIGH>;
 };
 
 #include "tps65217.dtsi"