Add channel 144 to HT40 minus channel list

This is needed to enable 40 and 80 MHz bandwidth AP on channel 144.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
diff --git a/ap.c b/ap.c
index 1b8a4f6..6dc7cea 100644
--- a/ap.c
+++ b/ap.c
@@ -7297,7 +7297,7 @@
 {
 	return chan == 40 || chan == 48 || chan == 56 || chan == 64 ||
 		chan == 104 || chan == 112 || chan == 120 || chan == 128 ||
-		chan == 136 || chan == 153 || chan == 161;
+		chan == 136 || chan == 144 || chan == 153 || chan == 161;
 }