net: Fix docbook warning for IFF_VRF_MASTER enum
kbuild test robot reported:
tree: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head:
d52736e24fe2e927c26817256f8d1a3c8b5d51a0
commit:
4e3c89920cd3a6cfce22c6f537690747c26128dd [751/762] net: Introduce VRF related flags and helpers
reproduce: make htmldocs
>> Warning(include/linux/netdevice.h:1293): Enum value 'IFF_VRF_MASTER' not described in enum 'netdev_priv_flags'
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>