qcacmn: Add an enum to configure UNII-1 and UNII-2A band coexistance

Add an enum that enables/disables coexistance of UNII-1 and
UNII-2A band channels.

CRs-Fixed: 2570364
Change-Id: I30cdda555675e4772aff59ebbbacfdd79f699af5

dp/inc/cdp_txrx_stats_struct.h

@@ -1814,6 +1814,8 @@ enum _ol_ath_param_t {
 #endif
 	/* get MBSS enable flag */
 	OL_ATH_PARAM_MBSS_EN  = 426,
+	/* UNII-1 and UNII-2A channel coexistance */
+	OL_ATH_PARAM_CHAN_COEX = 427,
 };
 #endif
 /* Bitmasks for stats that can block */