cxgb4vf: add maintainer entry for cxgb4vf

Adding myself as the official maintainer of the Chelsio T4 Virtual function
Driver (cxgb4vf).

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed