[fpga] fix Xilinx Alveo U200 detection
We take only one per PCI physical slot (it looks like a FPGA after being flashed can have multiple PCI devices). The model detection was also fixed for Alveo U200.
We take only one per PCI physical slot (it looks like a FPGA after being flashed can have multiple PCI devices). The model detection was also fixed for Alveo U200.