[patch] scsi: qedi: silence sprintf() overflow warning

[Dan Carpenter <dan.carpenter@oracle.com>]

The problem here is this:

	sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);

host_buf is 16 character so we only have 6 characters left for
->host_no.  But ->host_no is set in scsi_host_alloc():

	index = ida_simple_get(&host_index_ida, 0, 0, GFP_KERNEL);

It could theoretically go up to 0x8000000 so we need space for 10
digits.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index 5eda21d903e9..0dcf3b08230c 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -1735,7 +1735,7 @@ static int __qedi_probe(struct pci_dev *pdev, int mode)
 	u32 dp_module = 0;
 	u8 dp_level = 0;
 	bool is_vf = false;
-	char host_buf[16];
+	char host_buf[20];
 	struct qed_link_params link_params;
 	struct qed_slowpath_params sp_params;
 	struct qed_probe_params qed_params;