arm64: dts: imx8mq-evk: Adjust nodes following alphabetical sort

Adjust some nodes to make them follow alphabetical sort except
iomuxc node which is put at the end of file because of its huge
pinctrl data.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>