tools/perf/build: Standardize the various messages output by parallel make

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-mky0rtpwxi3ivxsvdjoOEmhr@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index fb6ec06..62d02cd 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -179,9 +179,9 @@
 feature_print = $(eval $(feature_print_code))
 define feature_print_code
   ifeq ($(feature-$(1)), 1)
-    MSG := $(shell printf '...%30s: [ \033[32mon\033[m  ]' $(1))
+    MSG = $(shell printf '...%30s: [ \033[32mon\033[m  ]' $(1))
   else
-    MSG := $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
+    MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
   endif
   $(info $(MSG))
 endef