ueventd.omap4pandaboard.rc: give system user rights to /dev/i2c-4

This allows I2cService to touch it, so apps can use I2C devices via
I2cManager.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
diff --git a/ueventd.omap4pandaboard.rc b/ueventd.omap4pandaboard.rc
index 701e854..6d66049 100644
--- a/ueventd.omap4pandaboard.rc
+++ b/ueventd.omap4pandaboard.rc
@@ -1,3 +1,5 @@
+# Copyright (c) 2014 Motorola Mobility, LLC
+# Motorola Confidential/Restricted
 
 /dev/pvrsrvkm             0666   system     system
 
@@ -8,3 +10,6 @@
 #for SYSLINK
 /dev/rpmsg-omx0           0666   system     system
 /dev/rpmsg-omx1           0666   system     system
+
+# Project Ara: for I2C modules on expansion connector
+/dev/i2c-4                0660   system     system