arm64: dts: imx8mq-zii-ultra: Add hog suffixes to GPIO hogs

According to device tree specification, device node names should be
somewhat generic and reflecting the function of the device so add the
"hog" suffixes to all GPIO hog nodes.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>