ports/duemilanove: Clean generated man page

Now that the man page is generated to share with the uno port, it
needs to be cleaned.

Signed-off-by: Keith Packard <keithp@keithp.com>

ports/duemilanove/.gitignore

@@ -1,4 +1,5 @@
 snek-duemilanove-*.elf
 snek-duemilanove-*.hex
 snek-duemilanove-*.map
-snek-duemilanove-install
+snek-duemilanove-install
+snek-duemilanove-install.1

ports/duemilanove/Makefile

@@ -90,4 +90,4 @@ install: snek-$(BOARD)-install $(HEX) snek-$(BOARD)-install.1
 	install -m 0644 snek-$(BOARD)-install.1 $(DESTDIR)$(MANDIR)/man1
 
 clean::
-	rm -f *.elf *.hex *.map snek-$(BOARD)-install
+	rm -f *.elf *.hex *.map snek-$(BOARD)-install snek-$(BOARD)-install.1

ports/uno/.gitignore

@@ -1,4 +1,5 @@
 snek-uno-*.elf
 snek-uno-*.hex
 snek-uno-*.map
-snek-uno-install
+snek-uno-install
+snek-uno-install.1