perf config: Add missing newline on pr_warning() call in home_perfconfig()

Add missing newline on pr_warning() call in home_perfconfig().

Before:
# perf record
File /home/yangjihong/.perfconfig not owned by current user or root, ignoring it.Couldn't synthesize bpf events.

After:
# perf record
File /home/yangjihong/.perfconfig not owned by current user or root, ignoring it.
Couldn't synthesize bpf events.

Signed-off-by: Yang Jihong <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Andi Kleen <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/config.c

···
 
 	config = strdup(mkpath("%s/.perfconfig", home));
 	if (config == NULL) {
-		pr_warning("Not enough memory to process %s/.perfconfig, ignoring it.", home);
+		pr_warning("Not enough memory to process %s/.perfconfig, ignoring it.\n", home);
 		return NULL;
 	}
 
···
 		goto out_free;
 
 	if (st.st_uid && (st.st_uid != geteuid())) {
-		pr_warning("File %s not owned by current user or root, ignoring it.", config);
+		pr_warning("File %s not owned by current user or root, ignoring it.\n", config);
 		goto out_free;
 	}