It is documented, so enable it to follow the recommendation in the docs
and also save a few cycles.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: NChris Brandt <Chris.Brandt@renesas.com>
Reviewed-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>