mac80211: disable setting QoS flags from DSCP values.

This causes some problems with the current ath10k driver, which seems to do
wrong things with ADDBA if multiple QoS TIDs are in use at once.  In any
case, it's not clear that the default settings were what we wanted, so this
shouldn't hurt performance for now.  Eventually we can remove this when the
ath10k driver has been fixed up.

Change-Id: I980f7b21da9ff9826ca32f8460ee3fd6b6d1e42e
diff --git a/net/wireless/util.c b/net/wireless/util.c
index e5872ff..0193e24 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -695,6 +695,7 @@
 {
 	unsigned int dscp;
 	unsigned char vlan_priority;
+	return 0;
 
 	/* skb->priority values from 256->263 are magic values to
 	 * directly indicate a specific 802.1d priority.  This is used