[dv, mem_bkdr_util] Fix derived cls constructor
[dv, mem_bkdr_util] Fix derived cls constructor

The base class constructor gained an extra arg. Fix the derived
class constructor so that the new arg is propagated.

Signed-off-by: Srikrishna Iyer <2803d640feace36379942447842f26c7747b4dc3@google.com>

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