hostap: proc: substitute loops by %*phN

For dumping small buffers we may use %*phN specifier instead of custom
approach..
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/hostap/hostap_proc.c

@@ -186,11 +186,9 @@ static int prism2_bss_list_proc_show(struct seq_file *m, void *v)
 			   bss->ssid[i] : '_');
 
 	seq_putc(m, '\t');
-	for (i = 0; i < bss->ssid_len; i++)
-		seq_printf(m, "%02x", bss->ssid[i]);
+	seq_printf(m, "%*phN", (int)bss->ssid_len, bss->ssid);
 	seq_putc(m, '\t');
-	for (i = 0; i < bss->wpa_ie_len; i++)
-		seq_printf(m, "%02x", bss->wpa_ie[i]);
+	seq_printf(m, "%*phN", (int)bss->wpa_ie_len, bss->wpa_ie);
 	seq_putc(m, '\n');
 	return 0;
 }