dts: qcs404-evb: Add PMIC GPIO controller node

PMIC GPIOs are special GPIOs which are accessible through SPMI bus. So
add corresponding DT nodes.

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
diff --git a/arch/arm/dts/qcs404-evb.dts b/arch/arm/dts/qcs404-evb.dts
index 719e6a2..f127f53 100644
--- a/arch/arm/dts/qcs404-evb.dts
+++ b/arch/arm/dts/qcs404-evb.dts
@@ -168,6 +168,31 @@
 				maximum-speed = "high-speed";
 			};
 		};
+
+		spmi@200f000 {
+			compatible = "qcom,spmi-pmic-arb";
+			reg = <0x200f000 0x1000
+			       0x2400000 0x400000
+			       0x2c00000 0x400000>;
+			#address-cells = <0x1>;
+			#size-cells = <0x1>;
+
+			pms405_0: pms405@0 {
+				compatible = "qcom,spmi-pmic";
+				reg = <0x0 0x1>;
+				#address-cells = <0x1>;
+				#size-cells = <0x1>;
+
+				pms405_gpios: pms405_gpios@c000 {
+					compatible = "qcom,pms405-gpio";
+					reg = <0xc000 0x400>;
+					gpio-controller;
+					gpio-count = <12>;
+					#gpio-cells = <2>;
+					gpio-bank-name="pmic";
+				};
+			};
+		};
 	};
 };