ASoC: ti: j721e-evm: Add support for j7200-cpb audio

When j7200 SOM is attached to the CPB we only have parent clock for 48KHz
family and the rate of the parent clock is 2359296000Hz.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200910124110.19361-3-peter.ujfalusi@ti.com


Signed-off-by: Mark Brown <broonie@kernel.org>