sdm660-common: power-libperfmgr: Switch to powerhint for battery saver

Change-Id: I8a7616349564e67bb579cec80b9fcf753b5f6b69
Signed-off-by: chiru2000 <chiranth@m.ms.evolution-x.org>
Signed-off-by: clarencelol <clarencekuiek@icloud.com>
Signed-off-by: pix106 <sbordenave@gmail.com>

power-libperfmgr/sdm660_powerhint.json

@@ -138,6 +138,15 @@
       ],
       "ResetOnInit": true
     },
+    {
+      "Name": "KernelBatterySaver",
+      "Path": "/sys/module/battery_saver/parameters/enabled",
+      "Values": [
+        "Y",
+        "N"
+      ],
+      "ResetOnInit": true
+    },
     {
       "Name": "PowerHALMainState",
       "Path": "vendor.powerhal.state",
@@ -424,6 +433,12 @@
       "Duration": 0,
       "Value": "2,3"
     },
+    {
+      "PowerHint": "LOW_POWER",
+      "Node": "KernelBatterySaver",
+      "Duration": 0,
+      "Value": "Y"
+    },
     {
       "PowerHint": "Flipendo",
       "Node": "CPULittleClusterMaxFreq",