3c*/acenic/typhoon: Move 3Com Ethernet drivers

Moves the 3Com drivers into drivers/net/ethernet/3com/ and the necessary
Kconfig and Makefile changes.

Did not move the following drivers becuase they use a non-3Com
chipset: 3c503, 3c505, 3c507, 3c523 and 3c527

CC: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
CC: David Dillow <dave@thedillows.org>
CC: Jes Sorensen <jes@trained-monkey.org>
CC: Alan Cox <alan@linux.intel.com>
CC: David Hinds <dahinds@users.sourceforge.net>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: David Dillow <dave@thedillows.org>
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index d59e4f2..18193ec 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -11,4 +11,6 @@
 
 if ETHERNET
 
+source "drivers/net/ethernet/3com/Kconfig"
+
 endif # ETHERNET