ASoC: Intel: avs: rt286: Adjust platform name

ASoC: Intel: avs: rt286: Adjust platform name

The name of the platform component matches the name of the card's
platform_device.

This allows for simplifying card and dai_link initialization:
- drop mach->mach_params.platform usage
- drop snd_soc_fixup_dai_links_platform_name() usage

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Message-ID: <20250902094853.1231842-13-cezary.rojewski@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>