Sepolicy files for wificond

This sepolicy change allows wificond to run as a deamon.

BUG=28865186
TEST=compile
TEST=compile with ag/1059605
  Add wificond to '/target/product/base.mk'
  Adb shell ps -A | grep 'wificond'

Change-Id: If1e4a8542ac03e8ae42371d75aa46b90c3d8545d
(cherry picked from commit 4ef44a61)

file_contexts

@@ -161,6 +161,7 @@
 /system/bin/dumpstate   u:object_r:dumpstate_exec:s0
 /system/bin/vold	u:object_r:vold_exec:s0
 /system/bin/netd	u:object_r:netd_exec:s0
+/system/bin/wificond	u:object_r:wificond_exec:s0
 /system/bin/rild	u:object_r:rild_exec:s0
 /system/bin/audioserver	u:object_r:audioserver_exec:s0
 /system/bin/mediadrmserver	u:object_r:mediadrmserver_exec:s0

wificond.te

+# wificond
+type wificond, domain;
+type wificond_exec, exec_type, file_type;
+
+init_daemon_domain(wificond)