wifi: Add WifiMananger API is60GHzBandSupported

New system API mostly for usage from Settings,
to update the UI with features such as 60GHz band
selection in case the device is configured with 60GHz
support.

Bug: 147469373
Test: Manual - enable wifi and connect to an access point
Test: atest FrameworksWifiTests
Test: atest FrameworksWifiApiTests
Change-Id: Idb6b5350aaf1566df6a39fc0e3432f8464bf6df1
diff --git a/wifi/api/system-current.txt b/wifi/api/system-current.txt
index b2c9603..c3e573c 100644
--- a/wifi/api/system-current.txt
+++ b/wifi/api/system-current.txt
@@ -449,6 +449,7 @@
     method @Deprecated @Nullable @RequiresPermission(android.Manifest.permission.ACCESS_WIFI_STATE) public android.net.wifi.WifiConfiguration getWifiApConfiguration();
     method @RequiresPermission(android.Manifest.permission.ACCESS_WIFI_STATE) public int getWifiApState();
     method @NonNull @RequiresPermission(anyOf={android.Manifest.permission.NETWORK_SETTINGS, android.Manifest.permission.NETWORK_SETUP_WIZARD}) public java.util.List<android.net.wifi.WifiConfiguration> getWifiConfigForMatchedNetworkSuggestionsSharedWithUser(@NonNull java.util.List<android.net.wifi.ScanResult>);
+    method public boolean is60GHzBandSupported();
     method public boolean isApMacRandomizationSupported();
     method public boolean isConnectedMacRandomizationSupported();
     method @Deprecated public boolean isDeviceToDeviceRttSupported();