ARM: dts: kirkwood: Fix polarity of GPIO fan lines

[ Upstream commit b5f034845e70916fd33e172fad5ad530a29c10ab ]

These two lines are active high, not active low. The bug was
found when we changed the kernel to respect the polarity defined
in the device tree.

Fixes: 1b90e06b ("ARM: kirkwood: Use devicetree to define DNS-32[05] fan")
Cc: Jamie Lentin <jm@lentin.co.uk>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <gregory.clement@bootlin.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Julien D'Ascenzio <jdascenzio@posteo.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Reported-by: Julien D'Ascenzio <jdascenzio@posteo.net>
Tested-by: Julien D'Ascenzio <jdascenzio@posteo.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>