microwatt/uart16550
Michael Neuling aae45583d7 Add uart16550 files from fusesoc
These are needed for synthesis that doesn't use fusesoc natively.

These were pulled in via 'fusesoc fetch ::uart16550:1.5.5-r1'

Signed-off-by: Michael Neuling <mikey@neuling.org>
..
raminfr.v Add uart16550 files from fusesoc
uart_defines.v Add uart16550 files from fusesoc
uart_receiver.v Add uart16550 files from fusesoc
uart_regs.v Add uart16550 files from fusesoc
uart_rfifo.v Add uart16550 files from fusesoc
uart_sync_flops.v Add uart16550 files from fusesoc
uart_tfifo.v Add uart16550 files from fusesoc
uart_top.v Add uart16550 files from fusesoc
uart_transmitter.v Add uart16550 files from fusesoc
uart_wb.v Add uart16550 files from fusesoc