ARM: BCM5301X: Enable SPI-NOR on dual flash devices

Commit 1b47b98acce2 ("ARM: BCM5301X: Add DT entry for SPI controller and
NOR flash") enabled SPI-NOR device on routers using serial flash only.
However there are also devices with two flash memories:
1) Small SPI attached flash used mostly for booting
2) Bigger NAND used mostly for storing firmware
On such devices we still need SPI-NOR e.g. to access NVRAM data.

Signed-off-by: Rafał Miłecki <[e-mail]>
Signed-off-by: Florian Fainelli <[e-mail]>

arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts

···
 &usb3 {
 	vcc-gpio = <&chipcommon 10 GPIO_ACTIVE_LOW>;
 };
+
+&spi_nor {
+	status = "okay";
+};

arch/arm/boot/dts/bcm4708-netgear-r6250.dts

···
 &usb3 {
 	vcc-gpio = <&chipcommon 0 GPIO_ACTIVE_HIGH>;
 };
+
+&spi_nor {
+	status = "okay";
+};

arch/arm/boot/dts/bcm4708-netgear-r6300-v2.dts

···
 		};
 	};
 };
+
+&spi_nor {
+	status = "okay";
+};

arch/arm/boot/dts/bcm4709-buffalo-wxr-1900dhp.dts

···
 &usb2 {
 	vcc-gpio = <&chipcommon 13 GPIO_ACTIVE_HIGH>;
 };
+
+&spi_nor {
+	status = "okay";
+};

arch/arm/boot/dts/bcm47094-dlink-dir-885l.dts

···
 &usb3 {
 	vcc-gpio = <&chipcommon 18 GPIO_ACTIVE_HIGH>;
 };
+
+&spi_nor {
+	status = "okay";
+};