[dv, aon_timer] scoreboard model and checks refactor

The scoreboard now checks when different configuration values have
kicked-in and then computes the number of cycles it takes for any of
the interrupts to raise.
In addition, the TB now aims to predict the mirrored value of
interrupt state register in order to improve the passing
rate (specially those related to the buil-in intr_tests in the cip_base_vseq)

Signed-off-by: Antonio Martinez Zambrana <[email protected]>