qcacmn: Add SR LOAD variance iwpiv support

Added OL_ATH_PARAM_ACS_SRLOADVAR in ol_ath_param_t Pdev configuration
parameter.

Change-Id: I59580f0500f7691af5188cdefece022f1abdbec9
CRs-Fixed: 2036205

dp/inc/cdp_txrx_stats_struct.h

@@ -477,6 +477,7 @@ typedef enum _ol_ath_param_t {
 	OL_ATH_PARAM_PDEV_TO_REO_DEST = 349,
 	OL_ATH_PARAM_DUMP_CHAINMASK_TABLES = 350,
 	OL_ATH_PARAM_DUMP_OBJECTS = 351,
+	OL_ATH_PARAM_ACS_SRLOADVAR = 352,
 } ol_ath_param_t;
 
 /*