Add TDM audio on StarFive JH7110

Merge series from Walker Chen <walker.chen@starfivetech.com>:

This patchset adds TDM audio driver for the StarFive JH7110 SoC. The
first patch adds device tree binding for TDM module. The second patch
adds tdm driver support for JH7110 SoC. The last patch adds device tree
node and pins configuration of tdm to JH7110 dts.

The series has been tested on the VisionFive 2 board by plugging an
audio expansion board.

For more information of audio expansion board, you can take a look
at the following webpage:
https://wiki.seeedstudio.com/ReSpeaker_2_Mics_Pi_HAT/