move asn1 headers to include/ dir (2/5)

Show effects of the new sed step on asn1-generated files, without moving the
files.
diff --git a/src/rua/RUA_InitiatingMessage.h b/src/rua/RUA_InitiatingMessage.h
index d432ee4..1b321af 100644
--- a/src/rua/RUA_InitiatingMessage.h
+++ b/src/rua/RUA_InitiatingMessage.h
@@ -11,8 +11,8 @@
 #include <asn_application.h>
 
 /* Including external dependencies */
-#include "RUA_ProcedureCode.h"
-#include "RUA_Criticality.h"
+#include <osmocom/osmo-iuh/rua/RUA_ProcedureCode.h>
+#include <osmocom/osmo-iuh/rua/RUA_Criticality.h>
 #include <ANY.h>
 #include <constr_SEQUENCE.h>