[Elecraft] Always accept line in

[David Ferrington, M0XDF]

I'd like to use the voice keyer in MacLoggerDX, but since I have to switch
input from line in to rear mic do this, its a bit tedious.

Of course when the voice keyer becomes available, I wont have problem, but
until then, any suggestions for making this easier.
-- 
Natural ability without education has more often attained to glory and
virtue than education without natural ability. -Cicero, statesman, orator,
writer (106-43 BC)