Also some minor changes:
- remove device specific bpm_pcie_a7/bpm_pcie_k7 wrappers. Now a single
  bpm_pcie.vhd file is enough, as it includes ipcores_pkg.vhd package
  with necessary device-specific constraints.
- remove bpm_pcie_* packages. User design can simply use
    module_inst: entity work.module
  instantiation style
- change wb_transact to comply with native FIFO36E1 reset DRC
- nuke ML605 support
- remove unused HDL modules
- fix some regs to use synchronous reset. More to follow.