net/i40e: fix API comments for doxygen

Fixes: a541407fe4bc ("net/i40e: set VF MAC anti-spoofing from PF")
Fixes: 4cbc41efcbb2 ("net/i40e: set VF VLAN anti-spoofing from PF")
Fixes: c0ec14757c5f ("net/i40e: set VF unicast promiscuous mode from PF")
Fixes: ae57070ca8b7 ("net/i40e: set VF multicast promiscuous mode from PF")
Fixes: 83bb95e3fefc ("net/i40e: set VF VLAN insertion from PF")
Fixes: 61fff9b4c68b ("net/i40e: set VF broadcast mode from PF")
Fixes: c33abbc1440e ("net/i40e: set VF VLAN tag from PF")

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>