perf test: Fix spelling mistake "allos" -> "allocate"

There is a spelling mistake in a TEST_ASSERT_VAL message. Fix it.
Signed-off-by: NColin King <colin.king@canonical.com>
Reviewed-by: NMukesh Ojha <mojha@codeaurora.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-janitors@vger.kernel.org
Link: http://lore.kernel.org/lkml/20190911152148.17031-1-colin.king@canonical.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/event_update.c

@@ -94,7 +94,7 @@ int test__event_update(struct test *test __maybe_unused, int subtest __maybe_unu
 
 	evsel = perf_evlist__first(evlist);
 
-	TEST_ASSERT_VAL("failed to allos ids",
+	TEST_ASSERT_VAL("failed to allocate ids",
 			!perf_evsel__alloc_id(evsel, 1, 1));
 
 	perf_evlist__id_add(evlist, evsel, 0, 0, 123);