[DO NOT MERGE] Fix setPairingConfirmation permissions issue (2/2)

setPairingConfirmation was set to only require BLUETOOTH_ADMIN
permission which shouldn't be able to set the confirmation itself.

This is restricted to BLUETOOTH_PRIVILEGED permission.

Bug: 29043989
Change-Id: Iddc935f0b02f5ff56e930914b4b664377e786184
1 file changed