perf evlist: Rename perf_evlist__enable() to evlist__enable()

Rename perf_evlist__enable() to evlist__enable(), so we don't have a
name clash when we add perf_evlist__enable() 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/20190721112506.12306-22-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/x86/tests/perf-time-to-tsc.c

@@ -97,7 +97,7 @@ int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest __maybe
 		goto out_err;
 	}
 
-	perf_evlist__enable(evlist);
+	evlist__enable(evlist);
 
 	comm1 = "Test COMM 1";
 	CHECK__(prctl(PR_SET_NAME, (unsigned long)comm1, 0, 0, 0));