main/postmarketos-base: add tinydm config
Set postmarketOS default UID in tinydm config, so tinydm can be upstreamed to Alpine without hardcoding the pmOS default UID in the tinydm packaging.
Right now, it is hardcoded here:
Original config:
https://gitlab.com/postmarketOS/tinydm/-/blob/master/tinydm.confd
Edited by Administrator