Staging: rtl8188eu: Correct coding style errors

Correct errors reported by checkpatch.pl because space prohibited
before ','.
Also split one line into two as it was longer than
80 characters

Signed-off-by: Iban Rodriguez <iban.rodriguez@ono.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>