Fix compile when PPPOE is enabled

src/netif/etharp.c

@@ -57,10 +57,6 @@
 #include "netif/etharp.h"
 #include "lwip/ip6.h"
 
-#if PPPOE_SUPPORT
-#include "netif/ppp/pppoe.h"
-#endif /* PPPOE_SUPPORT */
-
 #include <string.h>
 
 #if LWIP_IPV4 && LWIP_ARP /* don't build if not configured for use in lwipopts.h */

src/netif/ethernet.c

@@ -48,6 +48,10 @@
 
 #include <string.h>
 
+#if PPPOE_SUPPORT
+#include "netif/ppp/pppoe.h"
+#endif /* PPPOE_SUPPORT */
+
 const struct eth_addr ethbroadcast = {{0xff,0xff,0xff,0xff,0xff,0xff}};
 const struct eth_addr ethzero = {{0,0,0,0,0,0}};