MIPS: dts: align SPI NOR node name with dtschema

The node names should be generic and SPI NOR dtschema expects "flash".
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Acked-by: NArınç ÜNAL <arinc.unal@arinc9.com>
Acked-by: NSergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/boot/dts/brcm/bcm97358svmb.dts

@@ -78,7 +78,7 @@
 &qspi {
 	status = "okay";
 
-	m25p80@0 {
+	flash@0 {
 		compatible = "m25p80";
 		reg = <0>;
 		spi-max-frequency = <40000000>;

arch/mips/boot/dts/brcm/bcm97360svmb.dts

@@ -81,7 +81,7 @@
 &qspi {
 	status = "okay";
 
-	m25p80@0 {
+	flash@0 {
 		compatible = "m25p80";
 		reg = <0>;
 		spi-max-frequency = <40000000>;

arch/mips/boot/dts/brcm/bcm97425svmb.dts

@@ -116,7 +116,7 @@
 &qspi {
 	status = "okay";
 
-	m25p80@0 {
+	flash@0 {
 		compatible = "m25p80";
 		reg = <0>;
 		spi-max-frequency = <40000000>;

arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts

@@ -129,7 +129,7 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinmux_spi_spi>, <&pinmux_spi_cs1_cs>;
 
-	m25p80@0 {
+	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
 		spi-max-frequency = <40000000>;

arch/mips/boot/dts/ralink/mt7621-gnubee-gb-pc1.dts

@@ -60,7 +60,7 @@
 &spi0 {
 	status = "okay";
 
-	m25p80@0 {
+	flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "jedec,spi-nor";

arch/mips/boot/dts/ralink/mt7621-gnubee-gb-pc2.dts

@@ -44,7 +44,7 @@
 &spi0 {
 	status = "okay";
 
-	m25p80@0 {
+	flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "jedec,spi-nor";