Pass the full apdev to the add_ap() function instead of just ifname.
This allows us to handle also remote hosts while we can check
apdev['hostname'], apdev['port'].
This step (4) converts the cases that call hostapd.add_ap() from a
helper function that got apdev[i] as an argument.
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>