$NetBSD: patch-Makefile.am,v 1.1 2019/07/08 12:52:42 nia Exp $

Support NetBSD.

--- Makefile.am.orig	2019-06-19 10:34:38.000000000 +0000
+++ Makefile.am
@@ -31,6 +31,10 @@ if OS_KFREEBSD
 SUBDIRS += libusb
 endif
 
+if OS_NETBSD
+SUBDIRS += libusb
+endif
+
 if OS_WINDOWS
 SUBDIRS += windows
 endif