arm64: dts: allwinner: beelink-gs1: Enable GPU OPP

Enable GPU OPP table for Beelink GS1.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220906153034.153321-6-peron.clem@gmail.com