usb: dwc3: trace: change format for string to cmd trace

a %x is much easier for a human to parse when reading tracepoint
output. Let's change it.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc3/trace.h

@@ -173,7 +173,7 @@ DECLARE_EVENT_CLASS(dwc3_log_generic_cmd,
 		__entry->param = param;
 		__entry->status = status;
 	),
-	TP_printk("cmd '%s' [%d] param %08x --> status: %s",
+	TP_printk("cmd '%s' [%x] param %08x --> status: %s",
 		dwc3_gadget_generic_cmd_string(__entry->cmd),
 		__entry->cmd, __entry->param,
 		dwc3_gadget_generic_cmd_status_string(__entry->status)