net: lan966x: Change the PTP pin used to read/write the PHC.

To read/write a value to a PHC, it is required to use a PTP pin.
Currently it is used pin 5, but change to pin 7 as is the last pin.
All the other pins will have different functions.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c

@@ -16,7 +16,7 @@
  */
 #define LAN966X_1PPB_FORMAT		3480517749LL
 
-#define TOD_ACC_PIN		0x5
+#define TOD_ACC_PIN		0x7
 
 enum {
 	PTP_PIN_ACTION_IDLE = 0,