merge liteeth

diff --cc .gitignore
index 36ca43f7002ffc9244455bcc2bc818918252e335,065c5521a883efd8b950ddf86f888632d033dc80..56baec5c5d9aed4c8895573b7a3cccd148be605f
--- 1/.gitignore
--- 2/.gitignore
+++ b/.gitignore
@@@ -1,13 -1,3 +1,14 @@@
  __pycache__
 -*.pyc
 +build/*
 +*.o
 +*.d
 +*.a
 +*.elf
 +*.bin
 +*.fbi
 +tools/flterm
 +tools/byteswap
 +software/include/generated/*.h
 +software/include/generated/*.ld
 +software/include/generated/*.mak
+ *.vcd