ASoC: ACPI: add new fields for SOF support

To prepare for SOF integration, we need new fields in the machine table.
It is intended that the same table is used for both closed-source and
open-source firmware to avoid repeating ACPI-related information
multiple times
No functional change

Signed-off-by: Pierre-Louis Bossart <[e-mail]>
Acked-by: Liam Girdwood <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

include/sound/soc-acpi.h

···
 /**
  * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are
  * related to the hardware, except for the firmware and topology file names.
+ * A platform supported by legacy and Sound Open Firmware (SOF) would expose
+ * all firmware/topology related fields.
  *
  * @id: ACPI ID (usually the codec's) used to find a matching machine driver.
  * @drv_name: machine driver name
- * @fw_filename: firmware file name.
+ * @fw_filename: firmware file name. Used when SOF is not enabled.
  * @board: board name
  * @machine_quirk: pointer to quirk, usually based on DMI information when
  * ACPI ID alone is not sufficient, wrong or misleading
···
  * audio codecs whose presence if checked with ACPI
  * @pdata: intended for platform data or machine specific-ops. This structure
  *  is not constant since this field may be updated at run-time
+ * @sof_fw_filename: Sound Open Firmware file name, if enabled
+ * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled
+ * @asoc_plat_name: ASoC platform name, used for binding machine drivers
+ * if non NULL
+ * @new_mach_data: machine driver private data fixup
  */
 /* Descriptor for SST ASoC machine driver */
 struct snd_soc_acpi_mach {
···
 	struct snd_soc_acpi_mach * (*machine_quirk)(void *arg);
 	const void *quirk_data;
 	void *pdata;
+	const char *sof_fw_filename;
+	const char *sof_tplg_filename;
+	const char *asoc_plat_name;
+	struct platform_device * (*new_mach_data)(void *pdata);
 };
 
 #define SND_SOC_ACPI_MAX_CODECS 3