[FPGA HOTFIX] Add ariane_peripherals.sv and ariane_testharness.sv to fpga_filter

Created by: Gchauvon

On some Xilinx's Vivado installation, ariane_peripherals.sv file is not overwritten by ariane_peripherals_xilinx.sv during update_compile_order -fileset [current_fileset] It would make ariane_xilinx.sv invalid as a top and ariane_testharness.sv would replace it.

I'm removing ariane_peripherals.sv and ariane_testharness.sv from add_sources.tcl given to Vivado to avoid file conflicts.