staging: rtl8188eu: core: Fixed wrong space error.

This patch fixes "foo     * bar" should be "foo   *bar" checkpatch.pl error in rtw_cmd.c

Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>