banana-pi: Do not try to set autoneg on the SFP ports

This will just crash dagger. They are already in autoneg, thats
all they support.

board/aarch64/bananapi-bpi-r3/rootfs/usr/share/product/bananapi,bpi-r3/etc/product/interface-quirks.json

@@ -0,0 +1,11 @@
+{
+    "sfp1": {
+	"comment": "Reports it supports autoneg, but if setting it, dagger crashes",
+	"broken-autoneg": true
+    },
+    "sfp2": {
+	"comment": "Reports it supports autoneg, but if setting it, dagger crashes",
+	"broken-autoneg": true
+    }
+
+}

src/confd/src/ieee802-ethernet-interface.c

@@ -69,6 +69,9 @@ static int netdag_gen_ethtool_autoneg(struct dagger *net, struct lyd_node *cif)
 	int mbps, err = 0;
 	FILE *fp;
 
+	if (iface_has_quirk(ifname, "broken-autoneg"))
+		return SR_ERR_OK;
+
 	if (iface_has_quirk(ifname, "phy-detached-when-down"))
 		phase = NETDAG_INIT_POST;