e1000e: Fix HW Error on es2lan, ARP capture issue by BMC

Several components to this complex fix. The es2lan cards occasionally
gave a "HW Error" especially when forcing speed. Some users also
reported that the BMC stole ARP packets.

The fixes include setting the proper SW_FW bits to tell the BMC
that we're active and not do any un-initialization at all, so the
setup routine is largely changed.

Signed-off-by: David Graham <david.graham@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/e1000e/defines.h b/drivers/net/e1000e/defines.h
index 4fb9d87..2a53875 100644
--- a/drivers/net/e1000e/defines.h
+++ b/drivers/net/e1000e/defines.h
@@ -184,6 +184,7 @@
 #define E1000_SWFW_EEP_SM   0x1
 #define E1000_SWFW_PHY0_SM  0x2
 #define E1000_SWFW_PHY1_SM  0x4
+#define E1000_SWFW_CSR_SM   0x8
 
 /* Device Control */
 #define E1000_CTRL_FD       0x00000001  /* Full duplex.0=half; 1=full */