[IPV6]: fix implicit declaration of function `xfrm6_tunnel_unregister'
[IPV6]: fix implicit declaration of function `xfrm6_tunnel_unregister'

Signed-off-by: Cal Peake <3f81e91d69a8a61ffbf19297eb0791ad54ce5690@absolutedigital.net>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs