sepolicy: Add rule to allow wfdservice access to display hal

 -- WFD service calls display hal apis to pause/resume secondary
    display during an ongoing WFD session.
 -- Add required permissions to ensure that the api calls reach
    display hal from WFD

CRs-Fixed: 2082598
Change-Id: Ief7f1b36cf98115cdcebd7e5400fbb6e3426f7e8
1 file changed