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

Make all changes to #include statements and build files.
diff --git a/include/osmocom/hnbap/IP-Address.h b/include/osmocom/hnbap/IP-Address.h
index 26a4cb5..501dab1 100644
--- a/include/osmocom/hnbap/IP-Address.h
+++ b/include/osmocom/hnbap/IP-Address.h
@@ -12,8 +12,8 @@
 #include <asn_application.h>
 
 /* Including external dependencies */
-#include <osmocom/osmo-iuh/hnbap/Ipv4Address.h>
-#include <osmocom/osmo-iuh/hnbap/Ipv6Address.h>
+#include <osmocom/hnbap/Ipv4Address.h>
+#include <osmocom/hnbap/Ipv6Address.h>
 #include <constr_CHOICE.h>
 #include <constr_SEQUENCE.h>
 
@@ -67,7 +67,7 @@
 #endif
 
 /* Referred external types */
-#include <osmocom/osmo-iuh/hnbap/IE-Extensions.h>
+#include <osmocom/hnbap/IE-Extensions.h>
 
 #endif	/* _IP_Address_H_ */
 #include <asn_internal.h>