drm/amdgpu: original raven doesn't support full asic reset

So don't use it.
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -537,6 +537,10 @@ soc15_asic_reset_method(struct amdgpu_device *adev)
 
 static int soc15_asic_reset(struct amdgpu_device *adev)
 {
+	/* original raven doesn't have full asic reset */
+	if (adev->pdev->device == 0x15dd && adev->rev_id < 0x8)
+		return 0;
+
 	switch (soc15_asic_reset_method(adev)) {
 		case AMD_RESET_METHOD_BACO:
 			if (!adev->in_suspend)