perf test bpf: Fix typo: "ehough" -> "enough"

Trivial typo fix in pr_debug message
Signed-off-by: Colin King <colin.king@canonical.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20160821141603.7832-1-colin.king@canonical.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/bpf.c

@@ -125,7 +125,7 @@ static int do_test(struct bpf_object *obj, int (*func)(void),
 	/* Instead of perf_evlist__new_default, don't add default events */
 	evlist = perf_evlist__new();
 	if (!evlist) {
-		pr_debug("No ehough memory to create evlist\n");
+		pr_debug("No enough memory to create evlist\n");
 		return TEST_FAIL;
 	}