arm64: dts: mediatek: mt8195: Add SVS node and reduce LVTS_AP iospace

arm64: dts: mediatek: mt8195: Add SVS node and reduce LVTS_AP iospace

Add the MediaTek SVS node: this will lower the voltage of various
components of the SoC based on chip quality (read from fuses) in
order to save power and generate less heat.
Also, reduce the LVTS_AP iospace to 0xc00, because that's exactly
where SVS starts.
 - LVTS_AP start: 0x1100b000 length: 0xc00
 - SVS start:     0x1100bc00 length: 0x400

Link: https://lore.kernel.org/r/20231121125044.78642-21-angelogioacchino.delregno@collabora.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>