openvswitch: Fix dependency on IPv6 defrag.
openvswitch: Fix dependency on IPv6 defrag.

When NF_CONNTRACK is built-in, NF_DEFRAG_IPV6 is a module, and
OPENVSWITCH is built-in, the following build error would occur:

net/built-in.o: In function `ovs_ct_execute':
(.text+0x10f587): undefined reference to `nf_ct_frag6_gather'

Fixes: 7f8a436eaa2c ("openvswitch: Add conntrack action")
Reported-by: Jim Davis <2c206a2580fbbd807f33aa755406225080803cdf@gmail.com>
Signed-off-by: Joe Stringer <59969d4426ca8e68344c28a9fcbac155693c4b00@nicira.com>
Acked-by: Pravin B Shelar <95dcc1879f3489c0d5163907cdd946775296b2dd@nicira.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs