arm64: dts: mt8183: add audio node

Add afe (audio front end) device node to the MT8183 dtsi.

Signed-off-by: Kansho Nishida <kansho@chromium.org>
Link: https://lore.kernel.org/r/20210706190111.v3.1.I88a52644e47e88b15f5db9841cb084dc53c5875c@changeid


Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>