mav fd18a6cdd8 Make some UART consoles to not spin wait for data to be sent.
At least with Tx FIFO enabled it shows me ~10% reduction of verbose boot
time with serial console at 115200 baud.

Reviewed by:	marcel
MFC after:	2 weeks
2017-05-01 19:47:10 +00:00
..
2017-04-24 12:52:42 +00:00
2017-05-01 17:01:00 +00:00
2017-02-28 23:42:47 +00:00
2017-04-29 19:20:50 +00:00
2017-04-26 00:34:05 +00:00
2017-02-28 23:42:47 +00:00
2017-02-28 23:42:47 +00:00