Wifi: Add device wiphy capability parameters

This commit adds the following parameters to DeviceWiphyCapabilities:
1. Support of 160MHz / 80+80MHz channel width
2. Max number of Tx/Rx spatial streams.

Bug: 144576344
Test: atest com.android.wifi.server
Change-Id: Iad4ce736968d23d5abb43c8948d34fe03dcbcb01