perf evlist: Rename perf_evlist__open() to evlist__open()

Rename perf_evlist__open() to evlist__open(), so we don't have a name
clash when we add perf_evlist__open() in libperf.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-20-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/keep-tracking.c

@@ -94,7 +94,7 @@ int test__keep_tracking(struct test *test __maybe_unused, int subtest __maybe_un
 	evsel->attr.disabled = 1;
 	evsel->attr.enable_on_exec = 0;
 
-	if (perf_evlist__open(evlist) < 0) {
+	if (evlist__open(evlist) < 0) {
 		pr_debug("Unable to open dummy and cycles event\n");
 		err = TEST_SKIP;
 		goto out_err;