Make AIDL HAL client attribute an exclusive client.

Like HIDL HALs, if we have a service which is allowed to access
hal_<foo>_service, we want that service to have the attribute
hal_<foo>_client.

Unlike HIDL HALs, some AIDL services are allowed to get ahold of all
HALs, so these have to be exempted from this check.

Fixes: 168152053
Test: neverallows pass
Change-Id: I4bce6d9441c2921c3ea40f2b01fef4030c02a28a
9 files changed