ASoC: SOF: core: Do not use 'bar' as parameter for block_read/write

The use of bar in the core poses limits on the portability of the code
to other, non iomapped platforms.
To make the API more generic, remove the use of 'bar' as parameter
for the block copy API.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@gmail.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20210915122116.18317-8-peter.ujfalusi@linux.intel.com


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