arm64: dts: rockchip: correct panel supplies on some rk3326 boards

arm64: dts: rockchip: correct panel supplies on some rk3326 boards

The Anbernic and Odroid Go have different panels and take differently
named supplies, so move all the supplies to DTS defining actual panel to
fix warnings like:

  rk3326-odroid-go3.dtb: panel@0: 'IOVCC-supply' is a required property
  rk3326-odroid-go3.dtb: panel@0: 'iovcc-supply', 'vdd-supply' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230326204520.80859-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>