dt-bindings: remoteproc: imx_rproc: Support i.MX93

Add i.MX93 remote processor(Cortex-M33) compatible string, and
reorder the strings in alphabetical order.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220429005346.2108279-2-peng.fan@oss.nxp.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>