apns: Add SK Telecom roaming APN

Change-Id: Icfd0ae2cdb6d1b684f796f74d55b6237add7cad3
diff --git a/prebuilt/common/etc/apns-conf.xml b/prebuilt/common/etc/apns-conf.xml
index 9e37fae..8af20b0 100644
--- a/prebuilt/common/etc/apns-conf.xml
+++ b/prebuilt/common/etc/apns-conf.xml
@@ -1021,6 +1021,7 @@
   <apn carrier="Softbank(open)" mcc="440" mnc="20" apn="open.softbank.ne.jp" user="opensoftbank" password="ebMNuX1FIHg9d3DA" mmsc="http://mms/" mmsproxy="mmsopen.softbank.ne.jp" mmsport="8080" type="default,supl,mms" />
   <apn carrier="Softbank(smile.world)" mcc="440" mnc="20" apn="smile.world" user="dna1trop" password="so2t3k3m2a" mmsc="http://mms/" mmsproxy="smilemms.softbank.ne.jp" mmsport="8080" type="default,supl,mms" />
   <apn carrier="SKT3G" mcc="450" mnc="05" apn="web.sktelecom.com" mmsc="http://omms.nate.com:9082/oma_mms" mmsproxy="smart.nate.com" mmsport="9093" type="default,supl,mms" />
+  <apn carrier="SK Telecom (Roaming)" mcc="450" mnc="05" apn="roaming.sktelecom.com" server="*" mmsc="vmms.nate.com" mmsport="8082" type="default,supl,mms" />
   <apn carrier="KT-HSDPA" mcc="450" mnc="08" apn="alwayson-r6.ktfwing.com" mmsc="http://mmsc.ktfwing.com:9082" type="default,supl,mms" />
   <apn carrier="Mobifone MMS" mcc="452" mnc="01" apn="m-i090" user="wap" password="wap" mmsc="http://203.162.21.114/mmsc" mmsproxy="203.162.21.114" mmsport="8000" type="mms" />
   <apn carrier="Mobifone" mcc="452" mnc="01" apn="m-wap" user="mms" password="mms" type="default,supl" />