qcacld-3.0: initialize SendFlags in HTT before downloading to FW

qcacld-2.0 to qcacld-3.0 propagation

In Low-latency interface, to avoid 1d2 happening during roaming
test, host need to send HTC header to fw, by setting SendFlags
to zero to avoid deadlock situation.1d2 happened during roaming
test.

Change-Id: Ib3d16deadf038708fb75bcba692bd6adf3959c4e
CRs-Fixed: 807505

core/htc/htc_packet.h

@@ -149,6 +149,7 @@ typedef struct _HTC_PACKET {
 		(p)->Endpoint = (ep);			      \
 		(p)->PktInfo.AsTx.Tag = (tag);		      \
 		(p)->PktInfo.AsTx.Flags = 0;		      \
+		(p)->PktInfo.AsTx.SendFlags = 0;	      \
 	}
 
 #define SET_HTC_PACKET_NET_BUF_CONTEXT(p,nb) \