SELinux fixes
This PR contains following SELinux fixes:
- graphics: add rules for dri_device type
- init: allow open and write for sysfs_devices_mmc:file
- mmc: common sysfs security context
- mt8390: add sysfs security context for USB and PMIC
- graphics: soft: Angles libraries on vendor
- network_stack: allow read to proc_net:file