regulator: dt-bindings: Add PMX65 compatibles

Add PMX65 compatibles for PMIC found in SDX65 platform.

Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Link: https://lore.kernel.org/r/1647410837-22537-2-git-send-email-quic_rohiagar@quicinc.com


Signed-off-by: Mark Brown <broonie@kernel.org>