Update EVS sample driver service name.  Reduce log spam.

Moves several log messages for 'D' to 'V' channel.
Updates sample driver to register as EvsEnumeratorHw so as not to
conflict with the EvsEnumeratorHw-Mock supplied by the 'default' mock
EVS driver.

Test:  Build and run on gordon_peak
Change-Id: I8acc338afefc50ea5456b4930376bdcbeae8471b
3 files changed