Add configuration jumpers to SFPGA's HSWAPEN
HSWAPEN is tied to ground, forcing the system FPGA IOs to pull-up while being configured via JTAG. At this moment the IRQ and BERR lines are asserted provoking a reboot on the CPU (MEN-A20). This behaviour could be fixed by connecting HSWAPEN to VCC and connecting the corresponding default pull-ups and pull-downs on the SFPGA IOs.