nvme: change shutdown timeout setting message

User visible messages containing the word "timeout" can be alarming.
This one from nvme is just reporting a potentially informative device
configuration, and everything is working as designed. Change the text to
report the less concerning "D3 entry latency", which is where this value
comes from anyway.
Reported-by: Len Brown <lenb@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>

drivers/nvme/host/core.c

@@ -3233,7 +3233,7 @@ static int nvme_init_identify(struct nvme_ctrl *ctrl)
 
 		if (ctrl->shutdown_timeout != shutdown_timeout)
 			dev_info(ctrl->device,
-				 "Shutdown timeout set to %u seconds\n",
+				 "D3 entry latency set to %u seconds\n",
 				 ctrl->shutdown_timeout);
 	} else
 		ctrl->shutdown_timeout = shutdown_timeout;