verilog-active-low-regexp

verilog-active-low-regexp is a variable defined in `verilog-mode.el'.
Its value is

nil

• This variable is safe as a file local variable if its value
  satisfies the predicate `stringp'.

Documentation:
If true, treat signals matching this regexp as active low.
This is used for AUTORESET and AUTOTIEOFF. For proper behavior,
you will probably also need `verilog-auto-reset-widths' set.

You can customize this variable.