drm/amdgpu: support athub cg setting for beige_goby

Enable athub cg for beige_goby.

Signed-off-by: Tao Zhou <[e-mail]>
Reviewed-by: Jiansong Chen <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/athub_v2_1.c

···
 	case CHIP_SIENNA_CICHLID:
 	case CHIP_NAVY_FLOUNDER:
 	case CHIP_DIMGREY_CAVEFISH:
+	case CHIP_BEIGE_GOBY:
 		athub_v2_1_update_medium_grain_clock_gating(adev, state == AMD_CG_STATE_GATE);
 		athub_v2_1_update_medium_grain_light_sleep(adev, state == AMD_CG_STATE_GATE);
 		break;