Add the LPG LED device for sun platforms. Currently, pm8550 LED
devices use the downstream leds-qti-tri-led driver. Update the LED
devices so that they use the upstream leds-qcom-lpg driver.
Change-Id: I6e9c80d9e7725e5978fbc8bebf02a7d66968d32e
Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com>