Use fully qualified path for OSI includes.
diff --git a/tools/hci/main.c b/tools/hci/main.c
index 844f288..fc433bc 100644
--- a/tools/hci/main.c
+++ b/tools/hci/main.c
@@ -6,7 +6,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include "osi.h"
+#include "osi/include/osi.h"
 
 typedef int (*handler_t)(int argc, char **argv);