Sato uses busybox that fails to write log using echo "" because
dmesg output can contain special characters.
[YOCTO #8377]
(From OE-Core rev: 89107d0e01235b8cff70c0325723d2a99d2c336c)
Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>