Attach device error message is cryptic and useless. Fix it to be
informative.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>
Reviewed-by: NKrzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>