bnxt_en: Avoid unnecessary NVM_GET_DEV_INFO cmd error log on VFs.

VFs do not have access permissions to issue NVM_GET_DEV_INFO
firmware command.

Fixes: 4933f675 ("bnxt_en: Add bnxt_hwrm_nvm_get_dev_info() to query NVM info.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -2079,6 +2079,9 @@ int bnxt_hwrm_nvm_get_dev_info(struct bnxt *bp,
 	struct hwrm_nvm_get_dev_info_input req = {0};
 	int rc;
 
+	if (BNXT_VF(bp))
+		return -EOPNOTSUPP;
+
 	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_DEV_INFO, -1, -1);
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);