staging: cxt1e1: remove space between function name and parenthesis

clean up checkpatch.pl warnings in linux.c:
 WARNING: space prohibited between function name
 and open parenthesis '('
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>