Keymaster memory management is inconsistent

Object derived from RefBase must be owned by sp rather then other smart
pointer implementations.

Bug: 79474587
Bug: 139269901
Change-Id: I7e90b5605e86f5582edf5cc6cc6d1ca606b97d8d
(cherry picked from commit 1d871328fb1105faf80da4105af62161137cf2e8)
1 file changed