xc/xc7: Add NeTV2 xc7a100t variant to boards
xc/xc7: Add NeTV2 xc7a100t variant to boards

Signed-off-by: Jan Kowalewski <2e8e4e3eff87a9260f1f165e4a72a8840d9a1b45@antmicro.com>

SymbiFlow/symbiflow-arch-defs,SymbiFlow/symbiflow-arch-defs