staging: vt6655: Add space around '*'

Add space around operator '*'. Problem found using
checkpatch.pl
CHECK: spaces preferred around that '*' (ctx:VxV)

Signed-off-by: Burcin Akalin <brcnakalin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>