eth: dwmac only interrupt on final packet

Signed-off-by: Krishnan Winter <krishnanwinter1@gmail.com>

drivers/network/dwmac-5.10a/ethernet.c

@@ -172,8 +172,14 @@ static void tx_provide(void)
             assert(!err);
 
             // For normal transmit descriptors, tdes2 needs to be set to generate an IRQ on transmit
-            // completion. We also need to provide the length of the buffer data in bits 13:0.
-            uint32_t tdes2 = DESC_TXCTRL_TXINT | buffer.len;
+            // completion. We will only do this for the final packet of the current transmission.
+            // We also need to provide the length of the buffer data in bits 13:0.
+            uint32_t tdes2 = buffer.len;
+            if (net_queue_empty_active(&tx_queue)) {
+                tdes2 |= DESC_TXCTRL_TXINT;
+            }
+
+        //    uint32_t tdes2 = DESC_TXCTRL_TXINT | buffer.len;
 
             // For normal transmit descritpors, we need to give ownership to DMA, as well as indicate
             // that this is the first and last parts of the current packet.