The getService() and registerAsService() methods of interface objects
now have default parameters of "default" for the service name. HALs
will not have to use any service name unless they want to register
more than one service.
Test: builds; verify HAL still works
Bug: 33844934
Change-Id: I43f282ffedf18e4b0817b49fc4860ac39b127d04
This is only for hals which are currently only in master. Separate
commit for hals currently in AOSP.
Test: pass
Change-Id: I0b1a09798c49f4f0141f36a322c4749e47eded03