mac80211: Fix hwflags debugfs file format

Commit 30686bf7f5b3 ("mac80211: convert HW flags to unsigned long
bitmap") accidentally removed the newline delimiter from the hwflags
debugfs file. Fix this by adding back the newline between the HW flags.

Cc: stable@vger.kernel.org [4.2]
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
[fix commit log]
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index ced6bf3..1560c84 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -149,7 +149,7 @@
 
 	for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) {
 		if (test_bit(i, local->hw.flags))
-			pos += scnprintf(pos, end - pos, "%s",
+			pos += scnprintf(pos, end - pos, "%s\n",
 					 hw_flag_names[i]);
 	}