[prim] Add additional qualification to the trigger
[prim] Add additional qualification to the trigger

- Ensure that the check does not fire on the VERY
  first clock edge. This can happen if the reset releases
  before the clock.

Signed-off-by: Timothy Chen <d7b2ae30d8c0f215facd721941273067fd1d14a2@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan