Fix ueventd denial.

Fix the following denials on grouper:

<5>[    7.548916] type=1400 audit(1383869369.940:4): avc:  denied  { write } for  pid=107 comm="ueventd" name="uevent" dev=sysfs ino=776 scontext=u:r:ueventd:s0 tcontext=u:object_r:sysfs_devices_tegradc:s0 tclass=file
<5>[    7.549091] type=1400 audit(1383869369.940:5): avc:  denied  { open } for  pid=107 comm="ueventd" name="uevent" dev=sysfs ino=776 scontext=u:r:ueventd:s0 tcontext=u:object_r:sysfs_devices_tegradc:s0 tclass=file

Change-Id: I1255488a9d2a5623ff29f8ae05499355b6ad72de
diff --git a/sepolicy/ueventd.te b/sepolicy/ueventd.te
new file mode 100644
index 0000000..e295158
--- /dev/null
+++ b/sepolicy/ueventd.te
@@ -0,0 +1 @@
+allow ueventd sysfs_devices_tegradc:file rw_file_perms;