staging: unisys: refactor ULTRA_IO_CHANNEL_PROTOCOL

Remove the typedef from ULTRA_IO_CHANNEL_PROTOCOL and use the name struct
spar_io_channel_protocol instead. Fix CamelCase member names:

ChannelHeader => channel_header
cmdQ => cmd_q
rspQ => rsp_q
zoneGuid => zone_uuid
ClientString => client_string

Update all references to changed names.

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