net: dsa: microchip: ksz8795: use port_cnt instead of TOTOAL_PORT_NUM

To get the driver working with other chips using different port counts
the dyn_mac_table should be flushed depending on the amount of available
ports. This patch remove the extra define TOTOAL_PORT_NUM and is
making use of the dynamic port_cnt variable instead.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/dsa/microchip/ksz8795.c

@@ -751,11 +751,11 @@ static void ksz8795_port_stp_state_set(struct dsa_switch *ds, int port,
 
 static void ksz8795_flush_dyn_mac_table(struct ksz_device *dev, int port)
 {
-	u8 learn[TOTAL_PORT_NUM];
+	u8 learn[DSA_MAX_PORTS];
 	int first, index, cnt;
 	struct ksz_port *p;
 
-	if ((uint)port < TOTAL_PORT_NUM) {
+	if ((uint)port < dev->port_cnt) {
 		first = port;
 		cnt = port + 1;
 	} else {

drivers/net/dsa/microchip/ksz8795_reg.h

@@ -846,8 +846,6 @@
 
 #define KS_PRIO_IN_REG			4
 
-#define TOTAL_PORT_NUM			5
-
 #define KSZ8795_COUNTER_NUM		0x20
 
 /* Common names used by other drivers */