With the newly added configurable clock options, the audio CODEC can
configure the mclk automatically.  Add the reference to the versaclock.
Since the devices on I2C5 can communicate at 400KHz, let's also increase
that too
Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20201224170502.2254683-3-aford173@gmail.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>