staging: unisys: refactor VISORCHIPSET_BUSDEV_NOTIFIERS

Get rid of the typedef and just use struct visorchipset_busdev_notifiers
instead. Fix CamelCase names in parameters for the function pointers:

busNo => bus_no
devNo => dev_no
typeGuid => type_uuid
minSize => min_size
maxSize => max_size

Update references.

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>