ARM: dts: keystone: Align SPI NOR node name with dtschema

The node names should be generic and SPI NOR dtschema expects "flash".

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Nishanth Menon <[e-mail]>
Reviewed-by: Grygorii Strashko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/keystone-k2e-evm.dts

···
 };
 
 &spi0 {
-	nor_flash: n25q128a11@0 {
+	nor_flash: flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "Micron,n25q128a11";

arch/arm/boot/dts/keystone-k2g-evm.dts

···
 	pinctrl-0 = <&qspi_pins>;
 	cdns,rclk-en;
 
-	flash0: m25p80@0 {
+	flash0: flash@0 {
 		compatible = "s25fl512s", "jedec,spi-nor";
 		reg = <0>;
 		spi-tx-bus-width = <1>;

arch/arm/boot/dts/keystone-k2g-ice.dts

···
 	cdns,rclk-en;
 	status = "okay";
 
-	flash0: m25p80@0 {
+	flash0: flash@0 {
 		compatible = "s25fl256s1", "jedec,spi-nor";
 		reg = <0>;
 		spi-tx-bus-width = <1>;

arch/arm/boot/dts/keystone-k2hk-evm.dts

···
 };
 
 &spi0 {
-	nor_flash: n25q128a11@0 {
+	nor_flash: flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "Micron,n25q128a11";

arch/arm/boot/dts/keystone-k2l-evm.dts

···
 };
 
 &spi0 {
-	nor_flash: n25q128a11@0 {
+	nor_flash: flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "Micron,n25q128a11";