HSDK board has sst26wf016b SPI NOR flash IC installed, enable it.

Signed-off-by: Eugeniy Paltsev <eugeniy.palt...@synopsys.com>
---
 arch/arc/boot/dts/hsdk.dts      | 8 ++++++++
 arch/arc/configs/hsdk_defconfig | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index bfc7f5f5d6f2..9bea5daadd23 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -264,6 +264,14 @@
                        clocks = <&input_clk>;
                        cs-gpios = <&creg_gpio 0 GPIO_ACTIVE_LOW>,
                                   <&creg_gpio 1 GPIO_ACTIVE_LOW>;
+
+                       spi-flash@0 {
+                               compatible = "sst26wf016b", "jedec,spi-nor";
+                               reg = <0>;
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               spi-max-frequency = <4000000>;
+                       };
                };
 
                creg_gpio: gpio@14b0 {
diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig
index 9b9a74444ce2..22fc70396a3b 100644
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -32,6 +32,8 @@ CONFIG_INET=y
 CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
+CONFIG_MTD=y
+CONFIG_MTD_SPI_NOR=y
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_NETDEVICES=y
-- 
2.21.0


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