net: mvpp2: use slab_build_skb for oversized frames

Setting frag_size to 0 to indicate kmalloc has been deprecated,
use slab_build_skb directly.

Fixes: ce098da1 ("skbuff: Introduce slab_build_skb()")
Signed-off-by: Aryan Srivastava <aryan.srivastava@alliedtelesis.co.nz>
Reviewed-by: Kees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/20240613024900.3842238-1-aryan.srivastava@alliedtelesis.co.nzSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

@@ -4014,7 +4014,10 @@ static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi,
 			}
 		}
 
+		if (frag_size)
 			skb = build_skb(data, frag_size);
+		else
+			skb = slab_build_skb(data);
 		if (!skb) {
 			netdev_warn(port->dev, "skb build failed\n");
 			goto err_drop_frame;