if device reports 2 ports and they're the "same" port, just auto select one of them

[mkinney]

We have a few situations where the single device reports as two serial ports.

example 1:
rak11200 on mac:
Ports detected:['/dev/cu.usbserial-1430', '/dev/cu.wchusbserial1430']

example 2:
heltec21 on mac (with serial driver installed)
Ports detected:['/dev/cu.SLAB_USBtoUART', '/dev/cu.usbserial-0001']

example 3:
tlora
ports:['/dev/cu.usbmodem11301', '/dev/cu.wchusbserial11301']

We should just pick the 2nd in each of those categories.