Support showing supported channels

mobile/src/main/java/be/mygod/vpnhotspot/util/UnblockCentral.kt

@@ -1,6 +1,7 @@
 package be.mygod.vpnhotspot.util
 
 import android.annotation.SuppressLint
+import android.net.wifi.SoftApConfiguration
 import android.net.wifi.p2p.WifiP2pConfig
 import androidx.annotation.RequiresApi
 import timber.log.Timber
@@ -28,6 +29,11 @@ object UnblockCentral {
         }
     }
 
+    @get:RequiresApi(31)
+    val SoftApConfiguration_BAND_TYPES get() = init.let {
+        SoftApConfiguration::class.java.getField("BAND_TYPES").get(null) as IntArray
+    }
+
     @RequiresApi(31)
     fun getApInstanceIdentifier(clazz: Class<*>) = init.let { clazz.getDeclaredMethod("getApInstanceIdentifier") }