perf tools: Fix redirection printouts

Fix the duplicate util/util printout Arnaldo reported:

       $ make V=1 O=/tmp/build/perf -C tools/perf/ util/srcline.o
   ...
       # Redirected target util/srcline.o =>     /tmp/build/perf/util/util/srcline.o

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20131010054256.GA23716@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Makefile.perf

@@ -600,11 +600,11 @@ ifneq ($(OUTPUT),)
 %.o: $(OUTPUT)%.o
 	@echo "    # Redirected target $@ => $(OUTPUT)$@"
 util/%.o: $(OUTPUT)util/%.o
-	@echo "    # Redirected target $@ => $(OUTPUT)util/$@"
+	@echo "    # Redirected target $@ => $(OUTPUT)$@"
 bench/%.o: $(OUTPUT)bench/%.o
-	@echo "    # Redirected target $@ => $(OUTPUT)bench/$@"
+	@echo "    # Redirected target $@ => $(OUTPUT)$@"
 tests/%.o: $(OUTPUT)tests/%.o
-	@echo "    # Redirected target $@ => $(OUTPUT)tests/$@"
+	@echo "    # Redirected target $@ => $(OUTPUT)$@"
 endif
 
 # These two need to be here so that when O= is not used they take precedence