rix-rs1/ipv4: show protocols all Hashpower

Hashpower BGP --- start 2021-08-25 Passive Received: Maximum number of prefixes reached

Description:    Hashpower/47787/AS-HASHPOWER
  BGP state:          Passive
    Neighbor address: 193.27.39.85
    Neighbor AS:      47787
    Local AS:         49634
    Last error:       Received: Maximum number of prefixes reached
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       disable