lineage-18.1-20210417-UNOFFICIAL-mido

- Synced latest LineageOS sources as of 17 April 2021
- Synced kernel with latest CAF Tag, Google's android-4.9 and WLAN Prima as of 17 April 2021
- Merged latest CAF tags as of 17 April 2021
- Update vendor security patch level
- Update Display,Audio,IMS,BT,Media,GPS,WFD stacks
- ViLTE: fixed camera icon stuck