arm64: dts: mediatek: mt8183-kukui: Override vgpu/vsram_gpu constraints

Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU
with the platform specific vmin/vmax for the highest possible SoC
binning.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230301095523.428461-3-angelogioacchino.delregno@collabora.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi

@@ -401,6 +401,9 @@ &mt6358codec {
 };
 
 &mt6358_vgpu_reg {
+	regulator-min-microvolt = <625000>;
+	regulator-max-microvolt = <900000>;
+
 	regulator-coupled-with = <&mt6358_vsram_gpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };
@@ -416,6 +419,9 @@ &mt6358_vsim2_reg {
 };
 
 &mt6358_vsram_gpu_reg {
+	regulator-min-microvolt = <850000>;
+	regulator-max-microvolt = <1000000>;
+
 	regulator-coupled-with = <&mt6358_vgpu_reg>;
 	regulator-coupled-max-spread = <100000>;
 };