drm/radeon/dpm/rv6xx: restructure code
drm/radeon/dpm/rv6xx: restructure code

Needed to properly handle dynamic state adjustment.

Signed-off-by: Alex Deucher <08dc22c6156113f2deff178e35e3ed9b24d6af9e@amd.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs