arm64: dts: Add NAND DT nodes for Stingray SOC

This patch adds NAND controller DT Node and NAND chip DT
node for Stingray SOC and Stingray reference boards.
Signed-off-by: NPramod Kumar <pramod.kumar@broadcom.com>
Signed-off-by: NAbhishek Shah <abhishek.shah@broadcom.com>
Reviewed-by: NVikram Prakash <vikram.prakash@broadcom.com>
Reviewed-by: NRay Jui <ray.jui@broadcom.com>
Reviewed-by: NScott Branden <scott.branden@broadcom.com>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

arch/arm64/boot/dts/broadcom/stingray/bcm958742-base.dtsi

@@ -53,3 +53,18 @@
 &uart1 {
 	status = "okay";
 };
+
+&nand {
+	status = "ok";
+	nandcs@0 {
+		compatible = "brcm,nandcs";
+		reg = <0>;
+		nand-ecc-mode = "hw";
+		nand-ecc-strength = <8>;
+		nand-ecc-step-size = <512>;
+		nand-bus-width = <16>;
+		brcm,nand-oob-sector-size = <16>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+	};
+};

arch/arm64/boot/dts/broadcom/stingray/stingray.dtsi

@@ -307,5 +307,18 @@
 			compatible = "brcm,iproc-rng200";
 			reg = <0x00220000 0x28>;
 		};
+
+		nand: nand@00360000 {
+			compatible = "brcm,nand-iproc", "brcm,brcmnand-v6.1";
+			reg = <0x00360000 0x600>,
+			      <0x0050a408 0x600>,
+			      <0x00360f00 0x20>;
+			reg-names = "nand", "iproc-idm", "iproc-ext";
+			interrupts = <GIC_SPI 203 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			brcm,nand-has-wp;
+			status = "disabled";
+		};
 	};
 };