qcacld-3.0: Enable multiple TX ring pairs for qca6750

Enable config flag to use multiple tx and tx completion
ring pairs for qca6750 when IPA is disabled.

Change-Id: Ide99b2f4d912b3bca551438cba522c2f9366b5d2
CRs-Fixed: 3075385

configs/default_defconfig

@@ -82,6 +82,7 @@ ifeq ($(CONFIG_CNSS_QCA6750), y)
 	CONFIG_WLAN_FEATURE_WMI_DIAG_OVER_CE7 := y
 	CONFIG_WLAN_DP_FEATURE_DEFERRED_REO_QDESC_DESTROY := y
 	CONFIG_WLAN_FEATURE_LRO_CTX_IN_CB := y
+	CONFIG_TX_MULTI_TCL := y
 endif
 
 ifeq ($(CONFIG_CNSS_WCN7850), y)