linux-phytec-ti

drm/radeon/dpm/rs780: add some sanity checking to sclk scaling

Since the clock scaling is based on fb divider adjustments,
make sure the other pll parameters are the same.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>