The correct path should be under /data,
or it is not writable.
wpa_supplicant now support p2p overlay configuration, a unified
wpa_supplicant init entry can be used.
Bug: 238601241
Test: create a group and check this group is persisted
after reboot
Change-Id: I3c5523626de22c26cb562c03e9fbd7aabf6d98e7
