This reverts commit 0d0af17a.

This commit causes reboot to fail on imx6 wandboard, so let's
revert it.

Cc: <stable@vger.kernel.org> #4.4
Reported-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>