arm64: dts: qcom: msm8916-wingtech-wt88047: Add flash LED

WT88047 uses OCP 8110 Flash LED driver. Add it to the device tree.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221128051512.125148-1-linmengbo0689@protonmail.com