net: ethernet: mtk_eth_soc: use napi_build_skb()

The napi_build_skb() can reuse the skb in skb cache per CPU or
can allocate skbs in bulk, which helps improve the performance.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

Author: nbd168

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -2245,7 +2245,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
 			if (ret != XDP_PASS)
 				goto skip_rx;
 
-			skb = build_skb(data, PAGE_SIZE);
+			skb = napi_build_skb(data, PAGE_SIZE);
 			if (unlikely(!skb)) {
 				page_pool_put_full_page(ring->page_pool,
 							page, true);
@@ -2283,7 +2283,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
 			dma_unmap_single(eth->dma_dev, ((u64)trxd.rxd1 | addr64),
 					 ring->buf_size, DMA_FROM_DEVICE);
 
-			skb = build_skb(data, ring->frag_size);
+			skb = napi_build_skb(data, ring->frag_size);
 			if (unlikely(!skb)) {
 				netdev->stats.rx_dropped++;
 				skb_free_frag(data);