OpenBSD support

Index: common/wscons.c
--- common/wscons.c.orig
+++ common/wscons.c
@@ -10,7 +10,7 @@
 
 #define STRLEN(s) ((sizeof(s) / sizeof(s[0])) - 1)
 
-#if defined(__NetBSD__)
+#if defined(__NetBSD__) || defined(__OpenBSD__)
 int path_is_wscons(const char *path) {
 	static const char wskbd[] = "/dev/wskbd";
 	static const char wsmouse[] = "/dev/wsmouse";
