lisa.tests.staging.util_tracking: Avoid fuzzy windows
lisa.tests.staging.util_tracking: Avoid fuzzy windows

Look at the value of the signals at their first update after each activation,
rather than after a hardcoded delta of 1ms.

ARM-software/lisa,ARM-software/lisa,credp/lisa,credp/lisa,ARM-software/lisa,credp/lisa,credp/lisa,ARM-software/lisa