Including <linux/if_bridge.h> causes the inclusion of <linux/in6.h>,
which defines 'struct in6_addr', already defined in <netinet/in.h>.
Remove <linux/if_bridge.h> to fix musl build.

--- tools/bneptest.c.orig	2015-07-30 21:17:18.000000000 +0200
+++ tools/bneptest.c	2017-03-01 19:27:43.579458817 +0100
@@ -36,7 +36,6 @@
 #include <net/if.h>
 #include <linux/sockios.h>
 #include <netinet/in.h>
-#include <linux/if_bridge.h>
 
 #include <glib.h>
 
@@ -50,6 +49,9 @@
 #include "lib/bnep.h"
 #include "profiles/network/bnep.h"
 
+/* From <linux/if_bridge.h> */
+#define BRCTL_SET_BRIDGE_FORWARD_DELAY 8
+
 enum {
 	MODE_LISTEN,
 	MODE_CONNECT,