vt6655: fix printk usage in wpactl.c

This patch fixes the usage of printk in wpactl.c concering one missing log level
occurence and some whitespaces before a newline.

Signed-off-by: Martin Hofmann <martin.hofmann@studium.uni-erlangen.de>
Signed-off-by: Michael Gunselmann <michael.gunselmann@studium.uni-erlangen.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>