armv8: lx2162aqds: Add support for LX2162AQDS platform

This patch add base support for LX2162AQDS board.
LX2162AQDS board supports LX2162A family SoCs.
This patch add basic support of platform.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: hui.song <hui.song_1@nxp.com>
Signed-off-by: Manish Tomar <manish.tomar@nxp.com>
Signed-off-by: Vikas Singh <vikas.singh@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>