qcacmn: Add a change to do fast transmit completion

Lot of checks in Tx completion path are for special handlings
such as when ol stats are enabled some protective debug checks etc..
Add a logic to fast free of buffer at transmit completion.
If extended stats not enabled(Typically needed for enterprise cases)
do the buffer free faster. This is controlled through a flag.

Change-Id: I04873b5e3643d8e93e5b248fcaf23504dcb7624f

dp/wifi3.0/dp_tx.h

@@ -25,7 +25,7 @@
 
 #define DP_TX_MAX_NUM_FRAGS 6
 
-#define DP_TX_DESC_FLAG_ALLOCATED	0x1
+#define DP_TX_DESC_FLAG_SIMPLE		0x1
 #define DP_TX_DESC_FLAG_TO_FW		0x2
 #define DP_TX_DESC_FLAG_FRAG		0x4
 #define DP_TX_DESC_FLAG_RAW		0x8
@@ -34,6 +34,7 @@
 #define DP_TX_DESC_FLAG_COMPLETED_TX	0x40
 #define DP_TX_DESC_FLAG_ME		0x80
 #define DP_TX_DESC_FLAG_TDLS_FRAME	0x100
+#define DP_TX_DESC_FLAG_ALLOCATED	0x200
 
 #define DP_TX_FREE_SINGLE_BUF(soc, buf)                  \
 do {                                                           \