staging: unisys: fix CamelCase in uisctrl_register_req_handler_ex

Fix CamelCase names:
switchTypeGuid => switch_uuid
clientStr => client_str
clientStrLent => client_str_len
chipset_driverInfo => chipset_driver_info
Server_Channel_Ok => server_channel_ok
Server_Channel_Init => server_channel_init

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