zenfone9: Enable automatic channel selection

 * Automatic Channel Selection algorithms and implementations
   are used to enable interfaces to automatically figure
   out which channel configuration to use for initiating
   communication, for any mode of operation which initiates
   radiation (AP, Mesh, IBSS, P2P).

   https://wireless.wiki.kernel.org/en/users/documentation/acs

Change-Id: I177a2c43922ff0579cf8cd4a69ac2c94c56aa0c2
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 0452881..025895d 100755
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -261,3 +261,5 @@
 WIFI_HIDL_FEATURE_DUAL_INTERFACE := true
 WIFI_HIDL_UNIFIED_SUPPLICANT_SERVICE_RC_ENTRY := true
 WPA_SUPPLICANT_VERSION := VER_0_8_X
+
+CONFIG_ACS := true