verilog-auto-arg-sort

verilog-auto-arg-sort 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 `verilog-booleanp'.

Documentation:
Non-nil means AUTOARG signal names will be sorted, not in declaration order.
Declaration order is advantageous with order based instantiations
and is the default for backward compatibility. Sorted order
reduces changes when declarations are moved around in a file, and
it's bad practice to rely on order based instantiations anyhow.

See also `verilog-auto-inst-sort'.

You can customize this variable.