drm/amdgpu: default to true in amdgpu_device_asic_has_dc_support

We are not going to support any new chips with the old
non-DC code so make it the default.
Reviewed-by: NHarry Wentland <harry.wentland@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -3214,13 +3214,15 @@ bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
 	case CHIP_VANGOGH:
 	case CHIP_YELLOW_CARP:
 #endif
+	default:
 		return amdgpu_dc != 0;
-#endif
+#else
 	default:
 		if (amdgpu_dc > 0)
 			DRM_INFO_ONCE("Display Core has been requested via kernel parameter "
 					 "but isn't supported by ASIC, ignoring\n");
 		return false;
+#endif
 	}
 }