Remove osmo-iuh subdir level from include/ (2/2)

Make all changes to #include statements and build files.
diff --git a/include/osmocom/hnbap/HNB-Cell-Identifier.h b/include/osmocom/hnbap/HNB-Cell-Identifier.h
index e5feebf..66e63f5 100644
--- a/include/osmocom/hnbap/HNB-Cell-Identifier.h
+++ b/include/osmocom/hnbap/HNB-Cell-Identifier.h
@@ -12,8 +12,8 @@
 #include <asn_application.h>
 
 /* Including external dependencies */
-#include <osmocom/osmo-iuh/hnbap/PLMNidentity.h>
-#include <osmocom/osmo-iuh/hnbap/CellIdentity.h>
+#include <osmocom/hnbap/PLMNidentity.h>
+#include <osmocom/hnbap/CellIdentity.h>
 #include <constr_SEQUENCE.h>
 
 #ifdef __cplusplus
@@ -45,7 +45,7 @@
 #endif
 
 /* Referred external types */
-#include <osmocom/osmo-iuh/hnbap/IE-Extensions.h>
+#include <osmocom/hnbap/IE-Extensions.h>
 
 #endif	/* _HNB_Cell_Identifier_H_ */
 #include <asn_internal.h>