[PATCH] Fix userland build failure in linux/if_tunnel.h

[Sergei Poselenov <sposelenov@emcraft.com>]

Hello all,

The last commit to linux/if_tunnel.h broke the busybox
application build.
When linking the final image linker complains:
networking/libiproute/lib.a(iptunnel.o): In function `parse_args':
/work/psl/e/arm-aa/target_rpms/busybox/BUILD/busybox-1.7.1/networking/libiproute/iptunnel.c:189:
undefined reference to
`__cpu_to_be16' /work/psl/e/arm-aa/target_rpms/busybox/BUILD/busybox-1.7.1/networking/libiproute/iptunnel.c:190:
undefined reference to
`__cpu_to_be16' /work/psl/e/arm-aa/target_rpms/busybox/BUILD/busybox-1.7.1/networking/libiproute/iptunnel.c:202:
undefined reference to `__cpu_to_be16'
...

Please review the following patch, which fixes the build error.

Subject: [PATCH] The busybox application build failed in linking complaining to unresolved
 __cpu_to_be16 (ARM target). This patch fixes this.

Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
---
 include/linux/if_tunnel.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h
index 5a9aae4..137130b 100644
--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -2,6 +2,7 @@
 #define _IF_TUNNEL_H_
 
 #include <linux/types.h>
+#include <asm/byteorder.h>
 
 #ifdef __KERNEL__
 #include <linux/ip.h>
-- 
1.6.0.6