Add a configurable overlay to control a whether to disable firmware
roaming when the device goes into idle mode.
When the feature is enabled, all STA ifaces will disable firmware
roaming upon entering idle mode. Upon exiting idle mode, all STAs except
ones being used for the local-only use-case will re-enable firmware
roaming.
Bug: 318309862
Test: Firmware roaming enables/disables as intended
Change-Id: I8d0e5d4023bc8a8c314ea9333ce22d24c499dd25
Enable fast scan and set the channel cache number for each network to 3
Bug: 317011901
Test: Fast scan works as intended
Change-Id: I862b273f6a2fd2424cc2cb2d08890964b1e28d0f
Renaming overlay back to the original "charging" name for backwards
compatibility.
Bug: 264610460
Test: none
Change-Id: Ifba0e17aeba5974c00c27cd92671178d117d3fe8