staging: vc04_services: use KBUILD_MODNAME instead of own module name definition

staging: vc04_services: use KBUILD_MODNAME instead of own module name definition

Remove own module name definition and use KBUILD_MODNAME instead, which
is the standard way of getting the module name.

While at it, one realignment was made to improve readability.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Gaston Gonzalez <gascoar@gmail.com>
Link: https://lore.kernel.org/r/20220107234620.49900-3-gascoar@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>