ASoC: Intel: sof_es8336: remove hard-coded SSP selection

ASoC: Intel: sof_es8336: remove hard-coded SSP selection

For some reason we open-coded the SSP selection and only supported
SSP0, 1 and 2. On ApolloLake platforms, the SSP5 can be used as well
for the ES8336 hardware link.

Remove hard-coded if/else code and align with same code already used
in the SOF driver.

BugLink: https://github.com/thesofproject/sof/issues/6015
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220725194909.145418-8-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>