verilog-auto-reset-widths

verilog-auto-reset-widths is a variable defined in `verilog-mode.el'.
Its value is

t

• This variable is safe as a file local variable if its value
  satisfies the predicate `(lambda (x) (memq x (quote (nil t unbased))))'.

Documentation:
True means AUTORESET should determine the width of signals.
This is then used to set the width of the zero (32'h0 for example). This
is required by some lint tools that aren't smart enough to ignore widths of
the constant zero. This may result in ugly code when parameters determine
the MSB or LSB of a signal inside an AUTORESET.

If nil, AUTORESET uses "0" as the constant.

If 'unbased', AUTORESET used the unbased unsized literal "'0"
as the constant. This setting is strongly recommended for
SystemVerilog designs.

You can customize this variable.