hdl/ip_cores/wr-cores: Fix missing commit issue

See merge request !4

Klyone 20190412 fix copyright licenses

See merge request !3

Currently, only SPEC board is supported.

The tool wrs_port_tx_control is not needed anymore, its functionality (putting
the link down) is available by performing:
ifconfig <port> down
Such functionality was added in the commit:
[Feature: 1336] kernel/wr_nic: disable SFP when interface is down

Revert the following commits:
2b6c0bc2 userspace/tools: wrs_port_tx_control, rename network interfaces from wrX to wriX+1
ceb0c512 userspace/tools/wrs_port_tx_control: Include some defines
97d8878d userspace/tools/wrs_port_tx_control: initialise register address
35a63cd9 kernel/wb-regs: Added address offsets to endpoint-mdio.h
d11514e5 userspace/tools/wrs_port_tx_control: added unistd.h
3184c2a7 doc/wrs-user-manual: added description of wrs_port_tx_control
4da29df3 userspace/tools: dynamically check maximum port number in wr_port_tx_control
4244c894 userspace/tools: added a program to control the TX on a WRS port
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

FIXME: I know that this is not the place to add these definitions
    they should be added/fixed in the .wb files.

FIXME:
- fixed #ifndef statement, the dash makes the compiler ignore the MDIO_WB
  part, which does not allow the file to be #included together with the
  endpoint-regs.h file. This should be done in the .wb file.

FIXME:
- added register address constants. This should be done in the .wb file

Note: I have no idea how to do this, someone who knows could probably fix
    the issues raised here.

File provides information about pstats version, number of counters per word
stored in memory and number of counters per each port.

Conflicts:

	kernel/wbgen-regs/Makefile
	kernel/wbgen-regs/tru-regs.h
	kernel/wbgen-regs/tru-regs.wb

Conflicts:

	kernel/wbgen-regs/tru-regs.h
	kernel/wbgen-regs/tru-regs.wb
	userspace/wrsw_rtud/rtu_tru_drv.c
	userspace/wrsw_rtud/rtu_tru_drv.h

[this commit message by Alessandro]

This is a set of changes that bring upstream the internal status of
Tom's machine.  Splitting them up would be a massive work to little
benefit, since this is obviously right.

The broken symlink in the original commit in "tom-rt-fixes" branch is
fixed in this rebased commit.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

NOTE: the previous merge of rtu_32ports won't compile without this