e1000: add multicast stats counters

Add 4 multicast and broadcast hardware counters (rx/tx), and eliminate
as many non-hardware counters as possible.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
diff --git a/drivers/net/e1000/e1000_hw.h b/drivers/net/e1000/e1000_hw.h
index 47f34f2..113344e 100644
--- a/drivers/net/e1000/e1000_hw.h
+++ b/drivers/net/e1000/e1000_hw.h
@@ -1298,6 +1298,7 @@
     uint64_t algnerrc;
     uint64_t symerrs;
     uint64_t rxerrc;
+    uint64_t txerrc;
     uint64_t mpc;
     uint64_t scc;
     uint64_t ecol;
@@ -1330,8 +1331,9 @@
     uint64_t gotch;
     uint64_t rnbc;
     uint64_t ruc;
-    uint64_t rfc;
     uint64_t roc;
+    uint64_t rlerrc;
+    uint64_t rfc;
     uint64_t rjc;
     uint64_t mgprc;
     uint64_t mgpdc;