staging: unisys: fix parameters to macro SPAR_VNIC_CHANNEL_OK_CLIENT

Remove the unused logCtx parameter and fix the CamelCase name:

pChannel => ch

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