Allow setting a minimum scheduler policy for a service.

The binder kernel driver supports priority inheritance
at a node (service)-basis, that makes sure all transactions
into that service are executed at a specified minimum
scheduler policy and priority.

This change allows users of HIDL interfaces to set
such a policy for their interface.

Bug: 37293077
Bug: 63899698
Test: verified min_prio in /d/binder output
Merged-In: If72dd8322381246832b460c386dda44fbd225757
Change-Id: If72dd8322381246832b460c386dda44fbd225757
4 files changed