[ci] Continue if PLL fails to be set
[ci] Continue if PLL fails to be set

Emit a debug message to help capture more infor for #16543

Signed-off-by: Drew Macrae <32d48ac45113625c0a04afe7343eae478a303684@google.com>

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