vhdl-compose-configuration-use-subconfiguration

vhdl-compose-configuration-use-subconfiguration is a variable defined in `vhdl-mode.el'.
Its value is

t

Documentation:
Specifies whether subconfigurations should be used inside configurations.
If non-nil, automatically created configurations use configurations in binding
indications for subcomponents, if such configurations exist. Otherwise,
entities are used in binding indications for subcomponents.

You can customize this variable.