arm64: dts: freescale: imx8mm-verdin: enable hysteresis on slow input pin

[ Upstream commit 67cc6125 ]

SODIMM 17 can be used as an edge triggered interrupt supplied from an
off board source.

Enable hysteresis on the pinmuxing to increase immunity against noise
on the signal.

Fixes: 60f01b5b

 ("arm64: dts: imx8mm-verdin: update iomux configuration")
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>