Wifi AP: Randomize MAC address in SoftApManager

This replaces the randomization logic that previously lived inside the
HAL implementation.

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 SoftApManagerTest WifiVendorHalTest
Change-Id: I3aa7ecfd59236c9d9ab01e5f6e40500cb356c344
4 files changed