gts3l-common: rootdir/etc: Set default GPU power level to 6

For better battery on idle state. It will run at 133 MHz rather than
214 MHz before.

Signed-off-by: Deokgyu Yang <secugyu@gmail.com>

rootdir/etc/init.qcom.power.rc

@@ -191,6 +191,9 @@ on property:sys.boot_completed=1
     # Set I/O squeduler
     setprop sys.io.scheduler "bfq"
 
+    # Set idle GPU to 133 Mhz
+    write /sys/class/kgsl/kgsl-3d0/default_pwrlevel 6
+
     # Update cpusets now that boot is complete and we want better load balancing
     write /dev/cpuset/top-app/cpus 0-3
     write /dev/cpuset/foreground/cpus 0-2