Update leds-qcom-lpg binding to support LPG PPG. Change-Id: Ib9752426791a43d2fe611929d859c68f745b83fd Link: https://lore.kernel.org/all/20231221185838.28440-3-quic_amelende@quicinc.com/ Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com>