nvme-pci: set ctrl sqsize to the device q_depth

Align with what the rest of the transports are doing.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>

drivers/nvme/host/pci.c

@@ -2314,6 +2314,7 @@ static int nvme_pci_enable(struct nvme_dev *dev)
 
 	dev->q_depth = min_t(int, NVME_CAP_MQES(dev->ctrl.cap) + 1,
 				io_queue_depth);
+	dev->ctrl.sqsize = dev->q_depth - 1; /* 0's based queue depth */
 	dev->db_stride = 1 << NVME_CAP_STRIDE(dev->ctrl.cap);
 	dev->dbs = dev->bar + 4096;