Wifi AP: Remove HAL-level MAC randomization

Randomization will be handled by framework code instead. This also means
WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION is replaced with a
framework config option (config_wifi_ap_mac_randomization_supported),
which can be set from device overlays.

Bug: 142387520
Test: atest android.hardware.wifi@1.0-service-tests; adb shell LD_LIBRARY_PATH=:/system/lib64/vndk-R /data/local/tmp/android.hardware.wifi@1.0-service-tests/x86_64/android.hardware.wifi@1.0-service-tests
Test: vts-tradefed run vts --primary-abi-only --skip-device-info -l DEBUG --include-filter VtsHalWifiApV1_4Target
Test: lunch hawk-userdebug; m  (uses DISABLE_AP_MAC_RANDOMIZATION)
Change-Id: I2dbf1158368ce3c39980501f892c6de1ffb3f748