tree 39ea65f7622295ecec9109e686e9bc579ee0b2a8
parent 9d4ed963b0720503e48fce69bfc4227cc239fad0
author David Brazdil <dbrazdil@google.com> 1581010484 +0000
committer David Brazdil <dbrazdil@google.com> 1581010484 +0000

hftest.py: Load 'serial' module lazily

Build servers may not have the pyserial package installed, but they
don't use the SerialDriver to run tests. Load it lazily to avoid it
being a hard requirement.

Change-Id: Iefe30e76a57569c0fd6f64cdae7da04fbfe95833