qcacmn: Update Peer rx/tx rate based on DATA packets

Packets sent/received at fixed rate were also considered to
update the client rates as displayed in wlanconfig command output.
An idle client transmits NULL packets at basic rate and hence
rx rate shows up the basic rate when an idle client is connected.
Consider only data packets to update rates. Do not consider
NULL packets for rate update.
CRs-Fixed: 2435447

Change-Id: Icbf9f2a656bb0d36e16d953952c529185c119f17

qdf/inc/qdf_net_types.h

@@ -67,6 +67,13 @@ typedef __in6_addr_t in6_addr_t;
 #define QDF_IEEE80211_FC1_TODS          0x01
 #define QDF_IEEE80211_FC1_FROMDS        0x02
 
+#define QDF_IEEE80211_FC0_TYPE_MASK     0x0c
+#define QDF_IEEE80211_FC0_SUBTYPE_MASK  0xf0
+
+#define QDF_IEEE80211_FC0_TYPE_DATA     0x08
+#define QDF_IEEE80211_FC0_SUBTYPE_DATA  0x00
+#define QDF_IEEE80211_FC0_SUBTYPE_QOS   0x80
+
 #define QDF_NET_IS_MAC_MULTICAST(_a)   (*(_a) & 0x01)
 
 /**