drm/radeon: fix si_enable_smc_cac() failed issue

Need to set the dte flag on this asic.

Port the fix from amdgpu:
5cb818b861be114 ("drm/amd/amdgpu: fix si_enable_smc_cac() failed issue")

Reviewed-by: Yong Zhao <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
1 file changed