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/hnbap/HNBAP-PDU.h b/src/hnbap/HNBAP-PDU.h
index 8417085..18017ae 100644
--- a/src/hnbap/HNBAP-PDU.h
+++ b/src/hnbap/HNBAP-PDU.h
@@ -12,9 +12,9 @@
 #include <asn_application.h>
 
 /* Including external dependencies */
-#include "InitiatingMessage.h"
-#include "SuccessfulOutcome.h"
-#include "UnsuccessfulOutcome.h"
+#include <osmocom/osmo-iuh/hnbap/InitiatingMessage.h>
+#include <osmocom/osmo-iuh/hnbap/SuccessfulOutcome.h>
+#include <osmocom/osmo-iuh/hnbap/UnsuccessfulOutcome.h>
 #include <constr_CHOICE.h>
 
 #ifdef __cplusplus