Merge changes from topic 'supplicant_hidl_iface_create_remove'

* changes:
  wpa_supplicant: Send P2P mgmt iface add/remove notifications
  wpa_supplicant: Remove create/remove iface methods from HIDL
  wpa_supplicant: Add support for 2 iface types
  wpa_supplicant: Add P2P |Iface| & |Network| classes
  wpa_supplicant: Rename |Iface| & |INetwork|