RDMA/qib: Fix truncation compilation warnings in qib_verbs.c

Reduce nodename string size to fit IB_DEVICE_NODE_DESC_MAX.

drivers/infiniband/hw/qib/qib_verbs.c: In function ‘qib_register_ib_device’:
drivers/infiniband/hw/qib/qib_verbs.c:1554:40: error: ‘%s’ directive output may be truncated writing up to 64 bytes into a region of size 43
[-Werror=format-truncation=]
 1554 |                  "Intel Infiniband HCA %s", init_utsname()->nodename);
      |                                        ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband/hw/qib/qib_verbs.c:1553:9: note: ‘snprintf’ output between 22 and 86 bytes into a destination of size 64
 1553 |         snprintf(ibdev->node_desc, sizeof(ibdev->node_desc),
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1554 |                  "Intel Infiniband HCA %s", init_utsname()->nodename);
      |                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

cc1: all warnings being treated as errors

Link: https://lore.kernel.org/r/1fb6393fa2e0702fef995834c3c7db972bbc4d06.1719837715.git.leon@kernel.org
Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

Author: rleon

drivers/infiniband/hw/qib/qib_verbs.c

@@ -1551,7 +1551,7 @@ int qib_register_ib_device(struct qib_devdata *dd)
 	ibdev->dev.parent = &dd->pcidev->dev;
 
 	snprintf(ibdev->node_desc, sizeof(ibdev->node_desc),
-		 "Intel Infiniband HCA %s", init_utsname()->nodename);
+		 "Intel Infiniband HCA %.42s", init_utsname()->nodename);
 
 	/*
 	 * Fill in rvt info object.