dtsi: modify heartbeat polling time

Untimely battery update leads to battery jump

Line 18588: 02-15 04:10:30.405 W/healthd ( 0):

battery l=29 v=4367 t=24.0 h=2 st=2 c=6050000

fc=5000000 cc=0 chg=a Line 18728: 02-15 04:10:34.710

W/healthd ( 0): battery l=31 v=4321 t=24.0 h=2

st=2 c=5437000 fc=5000000 cc=0 chg=a

Change-Id: I4d9014df7afa7fbbc45a7952e3a25fcd74d3b971
Signed-off-by: wutao <huaqin89@motorola.com>
Reviewed-on: https://gerrit.mot.com/2194377
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Haijian Ma <mahj8@motorola.com>
Reviewed-by: Ying Xu <xuying9@motorola.com>
Reviewed-by: Yinjun Chen <a7301c@motorola.com>
Submit-Approved: Yinjun Chen <a7301c@motorola.com>

qcom/discrete_charging.dtsi

@@ -396,7 +396,7 @@
 		mmi,enable-charging-limit;
 		mmi,upper-limit-capacity = <65>;
 		mmi,lower-limit-capacity = <60>;
-		mmi,heartbeat-interval = <100000>;
+		mmi,heartbeat-interval = <5000>;
 		mmi,dcp-power-max = <10000>;
 		mmi,hvdcp-power-max = <15000>;
 	};