char: lp: fix spacing style before open parenthesis

Fixes the checkpatch warning:
"space prohibited between function name and open parenthesis"
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>