Add the missing pin configuration for the recently added camera
indicator LED.

Fixes: 1c63dd1c ("arm64: dts: qcom: sc8280xp-x13s: Add camera activity LED")
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20231003093647.3840-1-johan+linaro@kernel.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>