xc2bit: Implement reading PLA from crbit
xc2bit: Implement reading PLA from crbit

rqou/openfpga,azonenberg/openfpga,azonenberg/openfpga,azonenberg/openfpga,rqou/openfpga,rqou/openfpga,rqou/openfpga,rqou/openfpga,azonenberg/openfpga,azonenberg/openfpga