drm/amd/amdgpu: fix si_enable_smc_cac() failed issue

Signed-off-by: NJim Qu <Jim.Qu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/si_dpm.c

@@ -2055,6 +2055,7 @@ static void si_initialize_powertune_defaults(struct amdgpu_device *adev)
 		case 0x682C:
 			si_pi->cac_weights = cac_weights_cape_verde_pro;
 			si_pi->dte_data = dte_data_sun_xt;
+			update_dte_from_pl2 = true;
 			break;
 		case 0x6825:
 		case 0x6827: