ARM: dts: keystone-evm: add spi nor flash support

k2hk, k2e, k2l EVM board have the same Micron N25Q128A11
SPI NOR Flash installed on SPI0 bus.

The NOR Flash is splitted on two partistions:
partition@0
	label = "u-boot-spl";
	reg = <0x0 0x80000>;
partition@1
	label = "misc";
	reg = <0x80000 0xf80000>;

Hence, add SPI NOR Flash nodes to all k2hk, k2e, k2l EVM boards.
Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>

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

@@ -117,3 +117,25 @@
 		};
 	};
 };
+
+&spi0 {
+	nor_flash: n25q128a11@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "Micron,n25q128a11";
+		spi-max-frequency = <54000000>;
+		m25p,fast-read;
+		reg = <0>;
+
+		partition@0 {
+			label = "u-boot-spl";
+			reg = <0x0 0x80000>;
+			read-only;
+		};
+
+		partition@1 {
+			label = "misc";
+			reg = <0x80000 0xf80000>;
+		};
+	};
+};

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

@@ -145,3 +145,25 @@
 		reg = <0x50>;
 	};
 };
+
+&spi0 {
+	nor_flash: n25q128a11@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "Micron,n25q128a11";
+		spi-max-frequency = <54000000>;
+		m25p,fast-read;
+		reg = <0>;
+
+		partition@0 {
+			label = "u-boot-spl";
+			reg = <0x0 0x80000>;
+			read-only;
+		};
+
+		partition@1 {
+			label = "misc";
+			reg = <0x80000 0xf80000>;
+		};
+	};
+};

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

@@ -94,3 +94,25 @@
 		};
 	};
 };
+
+&spi0 {
+	nor_flash: n25q128a11@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "Micron,n25q128a11";
+		spi-max-frequency = <54000000>;
+		m25p,fast-read;
+		reg = <0>;
+
+		partition@0 {
+			label = "u-boot-spl";
+			reg = <0x0 0x80000>;
+			read-only;
+		};
+
+		partition@1 {
+			label = "misc";
+			reg = <0x80000 0xf80000>;
+		};
+	};
+};