leds: rgb: leds-qcom-lpg: Add support for PMK8550 PWM

Add support for pmk8550 compatible and lpg_data.

Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230407223849.17623-4-quic_amelende@quicinc.com