init: Add VibratorHW sysfs permissions

Change-Id: I956a7361fd2a77f0d6076376e69a65b0615ac394
diff --git a/prebuilt/common/etc/init.local.rc b/prebuilt/common/etc/init.local.rc
index 133c161..e929351 100644
--- a/prebuilt/common/etc/init.local.rc
+++ b/prebuilt/common/etc/init.local.rc
@@ -133,6 +133,10 @@
     chown system system /sys/devices/virtual/graphics/fb0/color_enhance
     chmod 0660 /sys/devices/virtual/graphics/fb0/color_enhance
 
+    # Vibrator intensity control
+    chown system system /sys/class/timed_output/vibrator/vtg_level
+    chmod 0644 /sys/class/timed_output/vibrator/vtg_level
+
     # Define TCP delayed ack settings for WiFi & LTE
     chown system system /sys/kernel/ipv4/tcp_delack_seg
     chown system system /sys/kernel/ipv4/tcp_use_userconfig