mei: add slow_firmware flag to the mei auxiliary device

Add slow_firmware flag to the mei auxiliary device info
to inform the mei driver about slow underlying firmware.
Such firmware will require to use larger operation timeouts.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-4-tomas.winkler@intel.comAcked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

include/linux/mei_aux.h

@@ -12,11 +12,14 @@
  * @aux_dev: - auxiliary device object
  * @irq: interrupt driving the mei auxiliary device
  * @bar: mmio resource bar reserved to mei auxiliary device
+ * @slow_firmware: The device has slow underlying firmware.
+ *                 Such firmware will require to use larger operation timeouts.
  */
 struct mei_aux_device {
 	struct auxiliary_device aux_dev;
 	int irq;
 	struct resource bar;
+	bool slow_firmware;
 };
 
 #define auxiliary_dev_to_mei_aux_dev(auxiliary_dev) \