init: enable regulator vdd_gpu

Since we don't use gpu in offmode, disable vdd_gpu can save ~50mA.
enable it at post-fs

Bug: 17660295

Change-Id: I955d479dbd5d81aa1f374fe56454fc7e35a1b78a
Signed-off-by: Weizhung Ding <weizhung_ding@htc.com>
diff --git a/init.flounder.rc b/init.flounder.rc
index bd21fde..a127b46 100644
--- a/init.flounder.rc
+++ b/init.flounder.rc
@@ -18,6 +18,7 @@
     symlink /mnt/shell/emulated/0 /storage/emulated/legacy
 
 on post-fs
+    write /sys/power/gpu_power_on 1
     write /sys/module/input_cfboost/parameters/gpu_wakeup 1
     # Turn on swap
     swapon_all /fstab.flounder