test/watchdog: Define a time quantum type

This will allow us to change the size of the windows of time we wait for
watchdog events to happen. Right now this doesn't actually change any
behavior it just makes it easier to tweak.

Tested:
    Run through the build and unit test suite.

Change-Id: If5b351574346426aff6499701164a3d5ebf9db7c
Signed-off-by: William A. Kennington III <wak@google.com>
2 files changed