[dv] Fix dside memory checking
[dv] Fix dside memory checking

Spike may access up to 8 bytes from the current PC, we must assume any
of those accesses are from the iside and skip dside memory checking for
them.

lowRISC/ibex,AmbiML/ibex,lowRISC/ibex,lowRISC/ibex,AmbiML/ibex,lowRISC/ibex,AmbiML/ibex,AmbiML/ibex