pcr: remove yosys-git

This makes it easier to maintain as the yosys in community is
good enough to syntetize the fommu verilog-blink.

This has been tested on the following configuration:
- The hacker revision of FOMMU was used
- The verilog-blink design from the fommu-workshop[1] repository was
  used to test it.
- The following packages were installed and are used by the Makefile:
  - yosys 0.9-1 from community on x86_64 and community-staging on i686
  - dfu-util from community
  - nextpnr-git from pcr
  - icestorm-git from pcr
- The design was modified on i686 to blink differently to make sure that
  the right design was installed into the flash chip of the FPGA.

The end result is the led blinking (differently) in both i686
and x86_64.

References:
-----------
[1] git://github.com/im-tomu/fomu-workshop.git

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

0 files changed, 0 insertions, 0 deletions