arm64: zynqmp: Remove addition number in node name

This change is coming from mainline review that's why this patch is
sync.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm016-dc2.dts

@@ -123,7 +123,7 @@ &spi0 {
 	status = "okay";
 	num-cs = <1>;
 
-	spi0_flash0: flash0@0 {
+	spi0_flash0: flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "sst,sst25wf080", "jedec,spi-nor";
@@ -141,7 +141,7 @@ &spi1 {
 	status = "okay";
 	num-cs = <1>;
 
-	spi1_flash0: flash0@0 {
+	spi1_flash0: flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "atmel,at45db041e", "atmel,at45", "atmel,dataflash";