cm: Allow LiveDisplay to write to color_enhance

The proper permissions for the color_enhance sysfs node weren't
being set, rendering the color enhancement switch useless.

Set the proper permissions for LiveDisplay to toggle color enhancement.

Change-Id: Ic8dba8953b73a497cb01a645834c0e7934092b38
diff --git a/prebuilt/common/etc/init.local.rc b/prebuilt/common/etc/init.local.rc
index 1f66b77..cabc63a 100644
--- a/prebuilt/common/etc/init.local.rc
+++ b/prebuilt/common/etc/init.local.rc
@@ -114,6 +114,8 @@
     chmod 0660 /sys/devices/virtual/graphics/fb0/rgb
     chown system system /sys/devices/virtual/graphics/fb0/sre
     chmod 0660 /sys/devices/virtual/graphics/fb0/sre
+    chown system system /sys/devices/virtual/graphics/fb0/color_enhance
+    chmod 0660 /sys/devices/virtual/graphics/fb0/color_enhance
 
     # Define TCP delayed ack settings for WiFi & LTE
     chown system system /sys/kernel/ipv4/tcp_delack_seg