In future we will want to support targets using the same vendor but
running at different clock frequencies. Since the clock frequency is
a parameter to the gateware generation process, we now name the target
directories as "vendor.frequency", i.e., "xilinx.100e6" and
"lattice.48e6" rather than "xilinx" and "lattice".
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Paul Mackerras