doc: Updated description of GP_DELAY
doc: Updated description of GP_DELAY

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