ARM: dts: msm: Add PCIe Root port configuration for sun

Add initial devicetree nodes and entries to support
PCIe RC0 port configuration on sun.

Change-Id: I3b7419bfd376a51388785cc4e2f9702ddaabe397
Signed-off-by: Lazarus Motha <quic_lmotha@quicinc.com>

qcom/sun-pinctrl.dtsi

@@ -281,6 +281,60 @@
 		};
 	};
 
+	pcie0 {
+		pcie0_perst_default: pcie0_perst_default {
+			mux {
+				pins = "gpio102";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio102";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+		};
+
+		pcie0_clkreq_default: pcie0_clkreq_default {
+			mux {
+				pins = "gpio103";
+				function = "pcie0_clk_req_n";
+			};
+
+			config {
+				pins = "gpio103";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+		};
+
+		pcie0_wake_default: pcie0_wake_default {
+			mux {
+				pins = "gpio104";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio104";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+		};
+
+		pcie0_clkreq_sleep: pcie0_clkreq_sleep {
+			mux {
+				pins = "gpio103";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio103";
+				drive-strength = <2>;
+				bias-pull-up;
+			};
+		};
+	};
+
 	sdc2_on: sdc2_on {
 		clk {
 			pins = "sdc2_clk";