tools/perf/build: Split out feature check: 'libelf-getphdrnum'

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-wa9qstb8erbjreLxiHepzjfw@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index bf96e34..83b3a02 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -10,6 +10,7 @@
 	test-glibc			\
 	test-dwarf			\
 	test-libelf-mmap		\
+	test-libelf-getphdrnum		\
 	test-libnuma
 
 CC := $(CC) -MD
@@ -50,6 +51,9 @@
 test-libelf-mmap:
 	$(BUILD) -lelf
 
+test-libelf-getphdrnum:
+	$(BUILD) -lelf
+
 test-libnuma:
 	$(BUILD) -lnuma