staging: unisys: fix CamelCase in bus_device_info_init()

Fix CamelCase names:
BusDeviceInfo_Init => bus_device_info_init
pBusDeviceInfo => bus_device_info_ptr
deviceType => dev_type
driverName => driver_name
verTag => ver_tag

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