ARM: dts: rockchip: Add spi_flash label to rk3288-veyron

The u-boot,spl-boot-order property requires a label at a boot
device node. In order to migrate to OF_UPSTREAM more easier
add a spi_flash label to the rk3288-veyron.dtsi file.

Signed-off-by: Johan Jonker <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Heiko Stuebner <[e-mail]>

arch/arm/boot/dts/rockchip/rk3288-veyron.dtsi

···
 
 	rx-sample-delay-ns = <12>;
 
-	flash@0 {
+	spi_flash: flash@0 {
 		compatible = "jedec,spi-nor";
 		spi-max-frequency = <50000000>;
 		reg = <0>;