drivers: ethernet: eth_stm32 tx_in_sem limit set to 1

tx_int_sem serves solely as a signal indicator and does not require signal
counting. Within eth_stm32_tx, the semaphore is reset each time a packet
is transmitted. Upon receiving the transmission completion signal, the
function exits. Signal counting is unnecessary. Change to a binary
semaphore.

Signed-off-by: WenBin Zhang <[email protected]>

Author: Freey0

drivers/ethernet/eth_stm32_hal_v2.c

@@ -512,7 +512,7 @@ int eth_stm32_hal_init(const struct device *dev)
 	/* Initialize semaphores */
 	k_mutex_init(&dev_data->tx_mutex);
 	k_sem_init(&dev_data->rx_int_sem, 0, K_SEM_MAX_LIMIT);
-	k_sem_init(&dev_data->tx_int_sem, 0, K_SEM_MAX_LIMIT);
+	k_sem_init(&dev_data->tx_int_sem, 0, 1);
 
 	/* Tx config init: */
 	memset(&tx_config, 0, sizeof(ETH_TxPacketConfig));