for the Wifi VTS tests.
Main method is getBridgedWifiApIface_1_6, which
allows us to configure the chip based on the
Bridged AP IfaceConcurrencyType, rather than
the AP IfaceType like in getBridgedWifiApIface_1_5.
Implementations were largely copied from
wifi_hidl_test_utils and wifi_hidl_test_utils_1_5.
Bug: 283402709
Test: atest VtsHalHostapdTargetTest
# tested on a Bluejay device that supports
# the AddAccessPointWithDualBandConfig test
Change-Id: I2571876149fc14c8de02e1cec9934dd052cada5c
Merged-In: I2571876149fc14c8de02e1cec9934dd052cada5c
eadd5160d8