e1000: Update truesize with the length of the packet for packet split

Update skb with the real packet size.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>

drivers/net/e1000/e1000_main.c

@@ -3770,6 +3770,7 @@ e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
 			ps_page->ps_page[j] = NULL;
 			skb->len += length;
 			skb->data_len += length;
+			skb->truesize += length;
 		}
 
 copydone: