Convert dt-binding rcpm from txt to yaml format.
Add fsl,ls1028a-rcpm compatible string.

Additional changes:
- Add missed compatible string fsl,<chip>-rcpm.
- Remove map fsl,<chip>-rcpm to fsl,qoriq-rcpm-<version>.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240802152219.2740137-1-Frank.Li@nxp.comSigned-off-by: Rob Herring (Arm) <robh@kernel.org>