selftests/bpf: test_progs: add missing \n to CHECK_FAIL

Copy-paste error from CHECK.

Fixes: d38835b7 ("selftests/bpf: test_progs: remove global fail/success counts")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

tools/testing/selftests/bpf/test_progs.h

@@ -107,7 +107,7 @@ extern struct ipv6_packet pkt_v6;
 	int __ret = !!(condition);					\
 	if (__ret) {							\
 		test__fail();						\
-		printf("%s:FAIL:%d ", __func__, __LINE__);		\
+		printf("%s:FAIL:%d\n", __func__, __LINE__);		\
 	}								\
 	__ret;								\
 })