linux-phytec-ti

drm/amdgpu/cz: fix cz_dpm_update_low_memory_pstate logic

The logic was reversed.  This feature is not enabled
at the moment, but fix it now for the future.

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