usb: gadget: f_tcm: Track BOT command kref

Set TARGET_SCF_ACK_KREF flag and allow f_tcm to take the BOT command
reference. A usb request may be canceled, the f_tcm knows this. Let it
decides if the command should be freed. This is the same as how the UAS
interface is done.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/e791c639e91b5d91a8787f5d6902e8c58f1dc172.1733876548.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/function/f_tcm.c

@@ -1466,6 +1466,7 @@ static void bot_cmd_work(struct work_struct *work)
 	struct se_cmd *se_cmd;
 	struct tcm_usbg_nexus *tv_nexus;
 	struct usbg_tpg *tpg;
+	int flags = TARGET_SCF_ACK_KREF;
 	int dir;
 
 	/*
@@ -1494,7 +1495,7 @@ static void bot_cmd_work(struct work_struct *work)
 
 	target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess,
 			  cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun,
-			  cmd->data_len, cmd->prio_attr, dir, 0);
+			  cmd->data_len, cmd->prio_attr, dir, flags);
 	return;
 
 out: