arm64: dts: mediatek: mt8183-kukui: Drop bogus fixed regulators

arm64: dts: mediatek: mt8183-kukui: Drop bogus fixed regulators

A couple of the fixed regulators in the Kukui dtsi do not actually
exist in the hardware design; they are simply power rails connected
together with 0 ohm bridges.

Drop them and assign their upstream supplies to their consumers instead.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20241030070224.1006331-5-wenst@chromium.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>