lib/IPA_Emulation: Build IPA_CTRL conditionally based on define

Change-Id: I4d1eca6b0008a395b7f7449e6ea3f9b6d41133c7
diff --git a/selftest/regen_makefile.sh b/selftest/regen_makefile.sh
index 2503fca..9d302ac 100755
--- a/selftest/regen_makefile.sh
+++ b/selftest/regen_makefile.sh
@@ -4,6 +4,6 @@
 
 FILES="*.ttcn *.ttcnpp IPA_CodecPort_CtrlFunctDef.cc IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc"
 
-export CPPFLAGS_TTCN3="-DIPA_EMULATION_RSL -DUSE_MTP3_DISTRIBUTOR"
+export CPPFLAGS_TTCN3="-DIPA_EMULATION_RSL -DIPA_EMULATION_CTRL -DUSE_MTP3_DISTRIBUTOR"
 
 ../regen-makefile.sh $MAIN $FILES