sunxi: A64: Update .dts/.dtsi files

Update the .dts/.dtsi file from the Linux sunxi/dt64-for-4.20 tree:
commit 679294497be31596e1c9c61507746d72b6b05f26
Author: Rodrigo Exterckötter Tjäder <rodrigo@tjader.xyz>
Date:   Wed Sep 26 19:48:24 2018 +0000
    arm64: dts: allwinner: a64: a64-olinuxino: set the PHY TX delay

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
diff --git a/arch/arm/dts/sun50i-a64-sopine.dtsi b/arch/arm/dts/sun50i-a64-sopine.dtsi
index 43418bd..6723b86 100644
--- a/arch/arm/dts/sun50i-a64-sopine.dtsi
+++ b/arch/arm/dts/sun50i-a64-sopine.dtsi
@@ -45,6 +45,8 @@
 
 #include "sun50i-a64.dtsi"
 
+#include <dt-bindings/gpio/gpio.h>
+
 &mmc0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc0_pins>;
@@ -52,6 +54,7 @@
 	non-removable;
 	disable-wp;
 	bus-width = <4>;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */
 	status = "okay";
 };
 
@@ -66,6 +69,18 @@
 	};
 };
 
+&spi0  {
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <40000000>;
+	};
+};
+
 #include "axp803.dtsi"
 
 &reg_aldo2 {