net: dsa: qca8k: Add define for port VID

Rather than using a magic value of 1 when configuring the port VIDs add
a QCA8K_PORT_VID_DEF define and use that instead. Also fix up the
bitmask in the process; the top 4 bits are reserved so this wasn't a
problem, but only masking 12 bits is the correct approach.
Signed-off-by: Jonathan McDowell <noodles@earth.li>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/qca8k.c

@@ -663,10 +663,11 @@ qca8k_setup(struct dsa_switch *ds)
 			 * default egress vid
 			 */
 			qca8k_rmw(priv, QCA8K_EGRESS_VLAN(i),
-				  0xffff << shift, 1 << shift);
+				  0xfff << shift,
+				  QCA8K_PORT_VID_DEF << shift);
 			qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(i),
-				    QCA8K_PORT_VLAN_CVID(1) |
-				    QCA8K_PORT_VLAN_SVID(1));
+				    QCA8K_PORT_VLAN_CVID(QCA8K_PORT_VID_DEF) |
+				    QCA8K_PORT_VLAN_SVID(QCA8K_PORT_VID_DEF));
 		}
 	}
 
@@ -1133,7 +1134,7 @@ qca8k_port_fdb_insert(struct qca8k_priv *priv, const u8 *addr,
 {
 	/* Set the vid to the port vlan id if no vid is set */
 	if (!vid)
-		vid = 1;
+		vid = QCA8K_PORT_VID_DEF;
 
 	return qca8k_fdb_add(priv, addr, port_mask, vid,
 			     QCA8K_ATU_STATUS_STATIC);
@@ -1157,7 +1158,7 @@ qca8k_port_fdb_del(struct dsa_switch *ds, int port,
 	u16 port_mask = BIT(port);
 
 	if (!vid)
-		vid = 1;
+		vid = QCA8K_PORT_VID_DEF;
 
 	return qca8k_fdb_del(priv, addr, port_mask, vid);
 }

drivers/net/dsa/qca8k.h

@@ -22,6 +22,8 @@
 
 #define QCA8K_CPU_PORT					0
 
+#define QCA8K_PORT_VID_DEF				1
+
 /* Global control registers */
 #define QCA8K_REG_MASK_CTRL				0x000
 #define   QCA8K_MASK_CTRL_ID_M				0xff