RDMA/cxgb4: Fix spelling mistake "immedate" -> "immediate"

There is a spelling mistake in a module parameter description. Fix it.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/cxgb4/qp.c

@@ -57,7 +57,7 @@ MODULE_PARM_DESC(db_coalescing_threshold,
 
 static int max_fr_immd = T4_MAX_FR_IMMD;
 module_param(max_fr_immd, int, 0644);
-MODULE_PARM_DESC(max_fr_immd, "fastreg threshold for using DSGL instead of immedate");
+MODULE_PARM_DESC(max_fr_immd, "fastreg threshold for using DSGL instead of immediate");
 
 static int alloc_ird(struct c4iw_dev *dev, u32 ird)
 {