Merge "Wifi: Add 6GHz band to getWifiBand method" into rvc-dev am: 80980838 am: defba844 am: 3145c53b am: a919d3f0

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/11688803

Change-Id: Icadc44e3cbc4a64a32f1c75279aa8ab381e5c1f3