Bug: 32123421
Bug: 32905206

Test: compiles, nfc works
Change-Id: Ibf72ef70255573e4df0863ea640354b3c37eb47d

HAL policy defines how the platform and a given HAL interact, but not how the
HAL is implemented.  This policy should be represented as an attribute that all
processes implementing the HAL can include.

Bug: 32123421
Test: Builds.
Change-Id: I17e5612c0835773c28e14f09e2ce7bdc3f210c15