sip: Get Rid of private copy of f_mgcp_addr2addrtype()

The function was copied from MGCP_Templates.ttcn since the logic is the
same for SDP, but copied in order to avoid depending on whole MGCP file.
Since now SDP logic has been moved to its own SDP_Templates and a new
f_sdp_addr2addrtype() was added, use that one.

Change-Id: I27ce46b6d23ba0f2704dd0cee290ed519dec278e
diff --git a/sip/gen_links.sh b/sip/gen_links.sh
index cf09731..81c1578 100755
--- a/sip/gen_links.sh
+++ b/sip/gen_links.sh
@@ -43,6 +43,7 @@
 FILES+="IPA_Types.ttcn IPA_Emulation.ttcnpp IPA_CodecPort.ttcn IPA_CodecPort_CtrlFunct.ttcn IPA_CodecPort_CtrlFunctDef.cc "
 FILES+="Osmocom_CTRL_Types.ttcn Osmocom_CTRL_Functions.ttcn Osmocom_CTRL_Adapter.ttcn "
 FILES+="RTP_CodecPort.ttcn RTP_CodecPort_CtrlFunctDef.cc "
+FILES+="SDP_Templates.ttcn "
 FILES+="SIP_Emulation.ttcn SIP_Templates.ttcn "
 gen_links $DIR $FILES