git: docs - Add note about powerd and serial port operation

[Matthew Dillon]

commit 17f399fd1e219df0072ba7c58df3c5a4de548809
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Thu Dec 12 17:32:53 2019 -0800

    docs - Add note about powerd and serial port operation
    
    * Serial port operation at high baud rates such as 115200 may
      lose characters if powerd is allowed to reduce the CPU
      frequency below 1500 MHz.
    
    * Document this fact and include a suggestion for powerd_flags
      if this is not desired.

Summary of changes:
 share/man/man5/rc.conf.5 | 4 ++++
 usr.sbin/powerd/powerd.8 | 4 ++++
 2 files changed, 8 insertions(+)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/17f399fd1e219df0072ba7c58df3c5a4de548809


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