build: move headers to include/osmocom/*
This came up while fixing 'make distcheck'; this is certainly not the easiest
way but it makes sense to have the headers in include/, like we do in openbsc.
The easy alternative might be to add -I$(top_srcdir)/src to src/Makefile.am.
Remove -I$(top_srcdir)/src from src/tests/Makefile.am, no longer needed.
Change-Id: I5a82e029dcdc4df0a60a31271a4883393fe59234
diff --git a/src/tests/test_common.c b/src/tests/test_common.c
index a79d5f5..5a37e7e 100644
--- a/src/tests/test_common.c
+++ b/src/tests/test_common.c
@@ -37,7 +37,7 @@
#include <osmocom/core/talloc.h>
#include <osmocom/core/logging.h>
-#include "hnbgw.h"
+#include <osmocom/iuh/hnbgw.h>
void *talloc_asn1_ctx;