firewire: cdev: add new version of ABI to notify time stamp at request/response subaction of transaction

This commit adds new version of ABI for future new events with time stamp
for request/response subaction of asynchronous transaction to user
space.

Link: https://lore.kernel.org/r/20230529113406.986289-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

Author: takaswie

drivers/firewire/core-cdev.c

@@ -43,6 +43,7 @@
 #define FW_CDEV_VERSION_EVENT_REQUEST2		4
 #define FW_CDEV_VERSION_ALLOCATE_REGION_END	4
 #define FW_CDEV_VERSION_AUTO_FLUSH_ISO_OVERFLOW	5
+#define FW_CDEV_VERSION_EVENT_ASYNC_TSTAMP	6
 
 struct client {
 	u32 version;

include/uapi/linux/firewire-cdev.h

@@ -457,6 +457,7 @@ union fw_cdev_event {
  *  5  (3.4)     - send %FW_CDEV_EVENT_ISO_INTERRUPT events when needed to
  *                 avoid dropping data
  *               - added %FW_CDEV_IOC_FLUSH_ISO
+ *  6  (6.5)     - added some event for subactions of asynchronous transaction with time stamp
  */
 
 /**