io_uring: rename op -> opcode

do this for consistency with the other trace messages

Signed-off-by: Dylan Yudaken <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>

Author: Dylan Yudaken

include/trace/events/io_uring.h

@@ -530,7 +530,7 @@ TRACE_EVENT(io_uring_req_failed,
 	),
 
 	TP_printk("ring %p, req %p, user_data 0x%llx, "
-		  "op %d, flags 0x%x, prio=%d, off=%llu, addr=%llu, "
+		  "opcode %d, flags 0x%x, prio=%d, off=%llu, addr=%llu, "
 		  "len=%u, rw_flags=0x%x, buf_index=%d, "
 		  "personality=%d, file_index=%d, pad=0x%llx, addr3=%llx, "
 		  "error=%d",