ASoC: Intel: machine driver updates for 5.18

Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

Two cleanups to remove an unused filename and typos, and one addition
of an ACPI matching table for a Dell SoundWire SKU without local
microphones.

The main change is the addition of a common 'sof-ssp-amp' machine
driver for devices with amplifiers only (no headset codec) and
different connections using I2S links (Bluetooth offload, HDMI
receiver). It's likely that the amplifier will be swapped out by OEMs,
this machine driver provides a relatively generic solution to avoid
copy-paste of similar solutions.