arm64: dts: qcom: sdm850-c630: add missing panel supply

Panel bindings (boe,nv133fhm-n61) require supply which here actually can
be turned on/off via GPIO control:

  sdm850-lenovo-yoga-c630.dtb: panel: 'power-supply' is a required property

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Caleb Connolly <caleb.connolly@linaro.org>
Link: https://lore.kernel.org/r/20230617171512.286795-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>