all: fix identation at the beggining of the line

This identation fix was done with the following command:

find . -type f -regextype posix-extended -iregex ".*(\.c|\.h|\.vhd)" | \
	xargs sed -i 's/  /\t/g'
.gitattibutes: add binary filter for dbe.vhd
eth_mac/*: add opencores ethernet mac (wip)
fabric/: add fabric interface (from wr-cores repo)
ethmac/: using ethmac from openrisc project

Also, wrappers were created to adhere to
some coding guidelines and to convert between
Wishbone B4 (pipelined) <->  Wishbone B2
Manifest.py: add ethmac and fabric interface to top Manifest
wb_fmc516/Manifest.py: temp fix for local .ucf file

Fix this in the wb-fmc516-devel branch
platform/virtex6/*: update chipscope .ngc files
top/dbe_bpm_ebone/*: new top synthesis design file for ebone testing (wip)
syn/dbe_bpm_ebone/*: new synthesis folder for ebone testing
embedded-sw/*: fix .gitignore and commit new files
modules/* and top/*: replaced tabs by four spaces and fix some alignment issues
wb_ethmac_adapter/*: add adapter for ethmac <-> etherbone (wip)
wb_ethmac_adapter_test/*: add testbench for ethmac_adapter (wip)
dbe_bpm_ebone.vhd/*: update submodule reference
xwb_ethmac_adapter.vhd: update module conversion
wb_ethmac_adapter_test/*: add simple testbench
syn/dbe_bpm_ebone/* and top/dbe_bpm_ebone/*: update synthesis file, fix top module
hdl/*/ethmac/*: change default generics and small fixes
hdl/platform/*: add 4-port chipscope icon