[otbn, dv] Fixed regression issue in otbn_stress_all_with_rand_reset
[otbn, dv] Fixed regression issue in otbn_stress_all_with_rand_reset

If a reset is asserted when elf file is getting loaded, the sequence
waits for reset to get de-asserted before executing run_otbn task.

Signed-off-by: Prajwala Puttappa <d42da9c1e7c0c7ddf8c0244ff16e57febc9395a0@lowrisc.org>

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