[sysrst_ctrl] Rename FSM states to fix lint issues
[sysrst_ctrl] Rename FSM states to fix lint issues

The FSM state encoding had a state named WAIT, which collides with a
reserved SV key word.
This adds the _ST suffix to all states in that FSM in order to fix
associated lint warnings.

Signed-off-by: Michael Schaffner <a005a2d3342a687ea2d05360c953107acbe83e08@opentitan.org>

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