Update selinux policy for display information

Two new sysfs nodes were added to sysfs_display type and permission to
access sysfs_display nodes was added for the dumpstate service. This
allows display information to be captured during bug report generation.

Bug: 225376485
Test: Manual - ran 'adb bugreport'
Change-Id: Ib121b0b21aa326e791e67c5bd24b3e70979a554c
2 files changed