re-structure the directory layout to reflect that that ft232r stuff is old

we have long only been working on the sam7 based system.

old/ft232r/Makefile

@@ -0,0 +1,10 @@
+LDFLAGS=-lftdi
+
+bitbang: bitbang.o soft_uart.o
+	$(CC) $(LDFLAGS) -o $@ $^
+
+clean:
+	rm -f bitbang bitbang.o soft_uart.o
+
+%: %.o
+	$(CC) $(LDFLAGS) -o $@ $^