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

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

host/Makefile

@@ -0,0 +1,13 @@
+LDFLAGS=-lusb -losmocore
+
+all: simtrace
+
+simtrace: main.o usb_helper.o usb.o apdu_split.o
+	$(CC) $(LDFLAGS) -o $@ $^
+
+%.o: %.c
+	$(CC) $(CFLAGS) -o $@ -c $^
+
+
+clean:
+	@rm -f simtrace *.o