ASoC: ti: davinci-mcasp: Add support for the OMAP4 version of McASP

There is a single McASP on OMAP4 (and OMAP5) which is configured to only
support DIT playback mode on a single serializer.

Add 0x200 offset to DAT port address as the TRM suggests it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20210705194249.2385-4-peter.ujfalusi@gmail.com


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