onclite: init.qcom: start msm_irqbalance for sdm632/sdm439

Use a separate function to start irqbalance for sdm632,
so that different configurations can be used based on socid,
also support msm_irqbalance for sdm439.

Change-Id: I35cb3aad93bba9063be7589ffad602d9a02cd658
CRs-Fixed: 2296232

rootdir/etc/init.qcom.rc

@@ -583,6 +583,12 @@ service vendor.msm_irqbalance /vendor/bin/msm_irqbalance -f /system/vendor/etc/m
     group root
     disabled
 
+service vendor.msm_irqbal_lb /vendor/bin/msm_irqbalance -f /system/vendor/etc/msm_irqbalance_little_big.conf
+    class core
+    user root
+    group root
+    disabled
+
 on charger
     setprop persist.sys.usb.config mass_storage
     load_system_props