Label /data/misc/zoneinfo

And allow any SELinux domain to read these timezone
related files.

Addresses the following denial:
<5>[    4.746399] type=1400 audit(3430294.470:7): avc:  denied  { open } for  pid=197 comm="time_daemon" name="tzdata" dev="mmcblk0p28" ino=618992 scontext=u:r:time:s0 tcontext=u:object_r:system_data_file:s0 tclass=file

Change-Id: Iff32465e62729d7aad8c79607848d89ce0aede86
diff --git a/file_contexts b/file_contexts
index 5296499..45823ef 100644
--- a/file_contexts
+++ b/file_contexts
@@ -180,6 +180,7 @@
 /data/misc/systemkeys(/.*)?     u:object_r:systemkeys_data_file:s0
 /data/misc/vpn(/.*)?            u:object_r:vpn_data_file:s0
 /data/misc/wifi(/.*)?           u:object_r:wifi_data_file:s0
+/data/misc/zoneinfo(/.*)?       u:object_r:zoneinfo_data_file:s0
 
 # App sandboxes
 /data/data/.*		u:object_r:app_data_file:s0