staging: slicoss: fix parenthesis alignment in slicoss.c

This patch fix open parenthesis alignment matching in slicoss.c
file to comply with the standard kernel coding style.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>