Add DTSI for i.MX8DX processor. According to 'i.MX 8DualX Industrial
Applications Processors Data Sheet', the GPU and shader use a clock of
372MHz. Therefore, this dtsi includes the imx8dxp.dtsi and changes the
clock accordingly.
Signed-off-by: Hiago De Franco <hiago.franco@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>