Since we now raise the clocks from begin_use() we don't need
a separate function for each hw generation any more.

v2: remove unintentional lowering of the UVD clocks, fix typos for CIK hw.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NEdward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>