remoteproc: omap: Use devm_rproc_add() helper

Use the device lifecycle managed add function. This helps prevent mistakes
like deleting out of order in cleanup functions and forgetting to delete
on error paths.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240610151721.189472-3-afd@ti.com


Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>