WIP: extcon 5.7
Updated extcon and role switch patches.
Replaces https://source.puri.sm/Librem5/linux-next/-/merge_requests/84 https://source.puri.sm/Librem5/linux-next/-/merge_requests/76
Initial plug still doesn't register sometimes.
This may cause issues on devices with broken CC lines.
Edited by Angus Ainslie