Add GPU Power-on hint for LAUNCH

Bug: 201718421
Test: trace while App launch
Change-Id: I5f994cf87a1696f843a2419d52133ccc5951d23c
Signed-off-by: Siddharth Kapoor <ksiddharth@google.com>

powerhint.json

@@ -287,6 +287,15 @@
         "67000"
       ],
       "ResetOnInit": true
+    },
+    {
+      "Name": "GPUPowerPolicy",
+      "Path": "/sys/devices/platform/1c500000.mali/power_policy",
+      "Values": [
+        "always_on",
+        "adaptive"
+      ],
+      "ResetOnInit": true
     }
   ],
   "Actions": [
@@ -343,6 +352,12 @@
       "Duration": 5000,
       "Value": "3172000"
     },
+    {
+      "PowerHint": "LAUNCH",
+      "Node": "GPUPowerPolicy",
+      "Duration": 5000,
+      "Value": "always_on"
+    },
     {
       "PowerHint": "DISPLAY_INACTIVE",
       "Node": "F2fsRecessModeEnable",