MLK-16118-5 DTS: imx8qxp: Update iMX8QXP DTS and binding files

MLK-16118-5 DTS: imx8qxp: Update iMX8QXP DTS and binding files

Sync the DTSi files and binding files with latest kernel commit:
"commit 2ce220ede08c0802a12459877ae134812ddda20b"

Some extra modifications:
1. Add "power-domains" property to all GPIO nodes and flexspi node, since
   they miss to add it.
2. Add "simple-bus" compatible strings to imx8qm-pm node.
3. Rename nodes "i2c0_mipi_lvds0" and "i2c0_mipi_lvds1"

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Ye Li <ye.li@nxp.com>