sm6150_au: wlan: enable btc chain mode feature for qca6390/qcn7605

Enable CONFIG_FEATURE_COEX and CONFIG_QCACLD_FEATURE_BTC_CHAIN_MODE.
Now nl80211 QCA vendor command for btc chain mode is available.

Change-Id: I390f380b707e806b12f9471dfd86d0c754f46b70
CRs-Fixed: 2515922

sm6150_au/wlan.mk

@@ -53,3 +53,11 @@ endif
 # # (<wlan_chip> is from $TARGET_WLAN_CHIP).
 # #   WLAN_CFG_OVERRIDE_<wlan_chip> := WLAN_CFG_1=n WLAN_CFG_2=y WLAN_CFG_3=n
 WLAN_CFG_OVERRIDE_qcn7605 := CONFIG_IPA_OFFLOAD=y
+
+# Override WLAN configurations
+# Usage:
+# To disable WLAN_CFG_1/WLAN_CFG_3 and enable WLAN_CFG_2 for <wlan_chip>
+# (<wlan_chip> is from $TARGET_WLAN_CHIP).
+#   WLAN_CFG_OVERRIDE_<wlan_chip> := WLAN_CFG_1=n WLAN_CFG_2=y WLAN_CFG_3=n
+WLAN_CFG_OVERRIDE_qca6390 := CONFIG_FEATURE_COEX=y CONFIG_QCACLD_FEATURE_BTC_CHAIN_MODE=y
+WLAN_CFG_OVERRIDE_qcn7605 := CONFIG_FEATURE_COEX=y CONFIG_QCACLD_FEATURE_BTC_CHAIN_MODE=y