j721e or j7200 SOM can be attached to the same Common Processor Board (CPB)

With the j7200 SOM only the 48KHz family parent clock is available and
McASP0 is used for the audio.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200910124110.19361-2-peter.ujfalusi@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>