[csrng/dv] Removed double cmd_rdy spin_waits. rtl fix in PR#9802
[csrng/dv] Removed double cmd_rdy spin_waits. rtl fix in PR#9802

Signed-off-by: Steve Nelson <5d638369142b4712506de2b0da85e816ae2ed155@wdc.com>

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