arm64: dts: mt8192: Add audio-related nodes

Add audio-related nodes in audsys for mt8192 SoC.
 - Move audsys node in ascending order.
 - Increase the address range's length from 0x1000 to 0x2000.

Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Link: https://lore.kernel.org/r/20220419025557.22262-3-allen-kh.cheng@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>