Add dtsi file for i.MX8MP board.
This has one HiFi4 core, from Cadence, lx6 compatible
and 2 System RAM.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Add dtsi file for i.MX8QM and i.MX8QXP boards.
These two have the same board-level definitions,
so we call it, generically, imx8.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>