Convert fsl,qoriq-mc from txt to yaml format.

Addition changes:
- Child node name allow 'ethernet'.
- Use 32bit address in example.
- Fixed missed ';' in example.
- Allow dma-coherent.
- Remove smmu, its part in example.
- Change child node name as 'ethernet'
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240617170934.813321-1-Frank.Li@nxp.comSigned-off-by: Rob Herring (Arm) <robh@kernel.org>