bcm53xx: support SPI-NOR on dual flash devices

We need it to access NVRAM.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 49262

target/linux/bcm53xx/patches-4.4/130-ARM-BCM5301X-Enable-SPI-NOR-on-dual-flash-devices.patch

@@ -0,0 +1,67 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Wed, 27 Apr 2016 08:58:01 +0200
+Subject: [PATCH] ARM: BCM5301X: Enable SPI-NOR on dual flash devices
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+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 <zajec5@gmail.com>
+---
+
+--- a/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts
++++ b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts
+@@ -147,3 +147,7 @@
+ &usb3 {
+ 	vcc-gpio = <&chipcommon 10 GPIO_ACTIVE_LOW>;
+ };
++
++&spi_nor {
++	status = "okay";
++};
+--- a/arch/arm/boot/dts/bcm4708-netgear-r6250.dts
++++ b/arch/arm/boot/dts/bcm4708-netgear-r6250.dts
+@@ -90,3 +90,7 @@
+ &usb3 {
+ 	vcc-gpio = <&chipcommon 0 GPIO_ACTIVE_HIGH>;
+ };
++
++&spi_nor {
++	status = "okay";
++};
+--- a/arch/arm/boot/dts/bcm4708-netgear-r6300-v2.dts
++++ b/arch/arm/boot/dts/bcm4708-netgear-r6300-v2.dts
+@@ -82,3 +82,7 @@
+ 		};
+ 	};
+ };
++
++&spi_nor {
++	status = "okay";
++};
+--- a/arch/arm/boot/dts/bcm4709-buffalo-wxr-1900dhp.dts
++++ b/arch/arm/boot/dts/bcm4709-buffalo-wxr-1900dhp.dts
+@@ -131,3 +131,7 @@
+ &usb2 {
+ 	vcc-gpio = <&chipcommon 13 GPIO_ACTIVE_HIGH>;
+ };
++
++&spi_nor {
++	status = "okay";
++};
+--- a/arch/arm/boot/dts/bcm47094-dlink-dir-885l.dts
++++ b/arch/arm/boot/dts/bcm47094-dlink-dir-885l.dts
+@@ -113,3 +113,7 @@
+ &usb3 {
+ 	vcc-gpio = <&chipcommon 18 GPIO_ACTIVE_HIGH>;
+ };
++
++&spi_nor {
++	status = "okay";
++};