apns-conf.xml: Add Public Mobile SP APN

See: http://goo.gl/vziz80

Change-Id: I5a0db08d8df5606ae9b3cc437656d88eec69246f
diff --git a/prebuilt/etc/apns-conf.xml b/prebuilt/etc/apns-conf.xml
index 5578081..5db3871 100644
--- a/prebuilt/etc/apns-conf.xml
+++ b/prebuilt/etc/apns-conf.xml
@@ -562,6 +562,7 @@
   <apn carrier="Telus SP" mcc="302" mnc="220" apn="sp.telus.com" mmsc="http://aliasredirect.net/proxy/mmsc" mmsproxy="74.49.0.18" mmsport="80" type="default,supl,mms" />
   <apn carrier="Telus SP Tether" mcc="302" mnc="220" apn="isp.telus.com" mmsc="http://aliasredirect.net/proxy/mmsc" mmsproxy="74.49.0.18" mmsport="80" type="default,supl,mms" />
   <apn carrier="Koodo SP" mcc="302" mnc="220" apn="sp.koodo.com" proxy="74.49.0.18" port="80" mmsc="http://aliasredirect.net/proxy/koodo/mmsc" mmsproxy="74.49.0.18" mmsport="80" type="default,supl,mms" />
+  <apn carrier="Public Mobile SP" mcc="302" mnc="220" apn="sp.mb.com" mmsc="http://aliasredirect.net/proxy/mb/mmsc" mmsproxy="74.49.0.18" mmsport="80" type="default,supl,mms" />
   <apn carrier="Eastlink Internet" mcc="302" mnc="270" apn="wisp.mobi.eastlink.ca" type="default,supl" />
   <apn carrier="Eastlink MMS" mcc="302" mnc="270" apn="mms.mobi.eastlink.ca" mmsc="http://mmss.mobi.eastlink.ca" mmsproxy="10.232.12.49" mmsport="8080" type="mms" />
   <apn carrier="Mobilicity MMS" mcc="302" mnc="320" apn="mms.davewireless.com" mmsc="http://mms.mobilicity.net" mmsproxy="10.100.3.4" mmsport="8080" type="mms" />