ASoC: topology: Add ops support to byte controls UAPI

Add UAPI support for setting byte control ops. Rename the ops structure
to be more generic so it can be sued by other objects too.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>