arm: dts: zynq-zed-adv7511-ad4020: Switch to spi-engine-ex

The new AD4000 series driver uses SPI prepare message mechanism which is
only supported by the new spi-engine-ex driver (spi-axi-spi-engine-ex.c)
in ADI Linux tree.
Update AD4000 series device trees to match the upstream-like SPI-Engine
driver.

Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>

Author: machschmitt

arch/arm/boot/dts/zynq-zed-adv7511-ad4020.dts

@@ -69,7 +69,7 @@
 	};
 
 	axi_spi_engine_0: spi@44a00000 {
-		compatible = "adi,axi-spi-engine-1.00.a";
+		compatible = "adi-ex,axi-spi-engine-1.00.a";
 		reg = <0x44a00000 0x1000>;
 		interrupt-parent = <&intc>;
 		interrupts = <0 56 IRQ_TYPE_LEVEL_HIGH>;