qcacmn: Add RC index macro for Smart Antenna 320 MHz BW

Add Rate Code Index macro for Smart Antenna 320 MHz BW in per PPDU
stats processing path.

Change-Id: I880cbc5d54f333dc2f8938c1a4d3bd56b96b7a6e
CRs-Fixed: 3429317

dp/inc/cdp_txrx_cmn_struct.h

@@ -116,6 +116,8 @@
 #define CDP_DATA_NON_QOS_TID 16
 
 #define CDP_NUM_SA_BW 4
+/* Smart Antenna 320MHz BW Phy MAX Rate Code Index */
+#define CDP_SA_BW320_INX 4
 #define CDP_PERCENT_MACRO 100
 #define CDP_NUM_KB_IN_MB 1000
 /*