allow coredump functionality

(cherrypick of commit d7e004ebf949ae21b299a49cff9917f6560200a3)

Change-Id: I7993698ac96f21db0039681275280dbd43ff61ba
diff --git a/file_contexts b/file_contexts
index 1d81cbf..038c8b6 100644
--- a/file_contexts
+++ b/file_contexts
@@ -223,6 +223,9 @@
 /data/misc/wifi/hostapd(/.*)?   u:object_r:wpa_socket:s0
 /data/misc/zoneinfo(/.*)?       u:object_r:zoneinfo_data_file:s0
 
+# coredump directory for userdebug/eng devices
+/cores(/.*)?                    u:object_r:coredump_file:s0
+
 # Wallpaper file for other users
 /data/system/users/[0-9]+/wallpaper		u:object_r:wallpaper_file:s0
 #############################