This commit adds the CTS support for the following APIs:
WifiManager#is5GHzBandSupported()
WifiManager#is6GHzBandSupported()
WifiManager#isWifiStandardSupported()
Bug: 151372208
Test: atest android.net.wifi.cts.WifiManagerTest
Change-Id: Id8ff303eba878db222e75bd514f7430efc754edb