Don't rm *~ in make clean, who knows what files that could be

Corresponding to flashrom svn r288 and coreboot v2 svn r3404.
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

Makefile

@@ -46,7 +46,7 @@ flashrom.o: flashrom.c
 	$(CC) -c $(CFLAGS) $(SVNDEF) $(CPPFLAGS) $< -o $@
 
 clean:
-	rm -f $(PROGRAM) *.o *~
+	rm -f $(PROGRAM) *.o
 
 distclean: clean
 	rm -f .dependencies