spn: add override for Korea

This removes duplicated entry for SKTELECOM

Before	- https://www.dropbox.com/s/0kz0go9yruzppsl/Screenshot_2014-08-05-14-23-37.png
After	- https://www.dropbox.com/s/etmomqysq7l8wh9/Screenshot_2014-08-05-14-25-51.png

Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>

Change-Id: I2176cd88da0b8580e3d31a986f1a2a67581e679c

prebuilt/common/etc/spn-conf.xml

@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <spnOverrides>
+  <!-- Korea -->
+  <spnOverride numeric="45005" spn_display_rule="SPN_RULE_SHOW_PLMN"/>
   <!-- Japan -->
   <spnOverride numeric="44010" spn_display_rule="SPN_RULE_SHOW_PLMN" spn_override_only_on="44010"/>
   <spnOverride numeric="44020" spn="SoftBank" />