[csrng, dv] Increas number of runs for csrng_intr and csrng_err tests
[csrng, dv] Increas number of runs for csrng_intr and csrng_err tests

These tests have quite some bins to hit. We have to increase the number
of seeds to hit all bins.

Signed-off-by: Pirmin Vogel <386a7fc8e7338ed7899b4d9883c0ebec5de81366@lowrisc.org>

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