Staging: slicoss: change memory allocation style in slicoss.c

This is a patch to slicoss.c to change the memory allocation style in
slicoss.c as found by checkpatch.pl

Signed-off-by: Ben Marsh <bmarsh94@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>