hawaii OLED:support led for moblie phone background [2/2]

TCMD:the background led not light
led function dts part
modified:   discrete_charging_hawao.dtsi

Change-Id: Ie1caa10d5650b71e88ab2a475a0b7b9f5e70e460
Reviewed-on: https://gerrit.mot.com/2138828
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Submit-Approved: Jira Key
Tested-by: Jira Key
Reviewed-by: <tinno18@motorola.com>
SLTApproved: <tinno18@motorola.com>
Submit-Approved: <tinno18@motorola.com>
Tested-by: <tinno18@motorola.com>
Reviewed-by: Jing Hu <hujing3@lenovo.com>
(cherry picked from commit de7c763b867be143be0925350508ffe910effb85)
Reviewed-on: https://gerrit.mot.com/2145171
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>

qcom/discrete_charging_hawao.dtsi

@@ -52,16 +52,26 @@
 		};
 	};
 };
-/*
+
 &spmi_bus {
 	qcom,pm6125@1 {
 		#address-cells = <1>;
 		qcom,pwms@b300 {
 			status = "ok"
+			qcom,lut-patterns = <0 0 0 14 28 42 56 70 84 100
+						100 84 70 56 42 28 14 0 0 0>;
+			lpg@1 {
+				qcom,lpg-chan-id = <1>;
+				qcom,ramp-step-ms = <200>;
+				qcom,ramp-low-index = <0>;
+				qcom,ramp-high-index = <19>;
+				qcom,ramp-pattern-repeat;
+				qcom,lpg-sdam-base = <0x48>;
+			};
 		};
 	};
 };
-*/
+
 
 &tlmm {
 	sgm4154x_gpio_pins: sgm4154x_gpio_pins {