ASoC: Intel: avs: Add rt5640 machine board

ASoC: Intel: avs: Add rt5640 machine board

To support connection between Intel AudioDSP and Realek 5640 codec
implement avs_rt5640 machine board driver. The codec chip is located on
I2C bus and the streaming occurs over I2S interface. A number of such
devices can be connected simultaneously to the platform. Majority of the
board's behavior is inherited from existing representatives such as
avs_rt274.

Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/20250530142120.2944095-4-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>