staging: unisys: refactor req_handler_add()

Fix the CamelCase parameter names:

Server_Channel_Ok => server_channel_ok
Server_Channel_Init => server_channel_init
clientStr => clientstr
clientStrLen => clientstr_len

And remove the extra parenthesis in the list_add_tail() call at the end.

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