tools: Get only verbose output with V=1

Fix having verbose build with V=0, e.g:

 make V=0 -C tools/ perf

Signed-off-by: Robert Richter <robert.richter@calxeda.com>
Link: http://lkml.kernel.org/r/20130503134953.GU8356@rric.localhost
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/config/utilities.mak b/tools/perf/config/utilities.mak
index 8ef3bd3..faffb52 100644
--- a/tools/perf/config/utilities.mak
+++ b/tools/perf/config/utilities.mak
@@ -181,7 +181,7 @@
 
 # try-cc
 # Usage: option = $(call try-cc, source-to-build, cc-options, msg)
-ifndef V
+ifneq ($(V),1)
 TRY_CC_OUTPUT= > /dev/null 2>&1
 endif
 TRY_CC_MSG=echo "    CHK $(3)" 1>&2;