Convert `InfoBond::ArpValidate(u32)` to enum

[cathay4t]

const BOND_ARP_VALIDATE_NONE: u32 = 0;
const BOND_ARP_VALIDATE_ACTIVE: u32 = 1 << BOND_STATE_ACTIVE as u32;
const BOND_ARP_VALIDATE_BACKUP: u32 = 1 << BOND_STATE_BACKUP as u32;
const BOND_ARP_VALIDATE_ALL: u32 =
    BOND_ARP_VALIDATE_ACTIVE | BOND_ARP_VALIDATE_BACKUP;
const BOND_ARP_FILTER: u32 = BOND_ARP_VALIDATE_ALL + 1;
const BOND_ARP_FILTER_ACTIVE: u32 = BOND_ARP_VALIDATE_ACTIVE | BOND_ARP_FILTER;
const BOND_ARP_FILTER_BACKUP: u32 = BOND_ARP_VALIDATE_BACKUP | BOND_ARP_FILTER;