drm/amd/pm: enable pm sysfs write for one VF mode

[why]
pm sysfs should be writable in one VF mode as is in passthrough

[how]
do not remove write access on pm sysfs if device is in one VF mode

Fixes: 11c9cc95 ("amdgpu/pm: Make sysfs pm attributes as read-only for VFs")
Signed-off-by: Yiqing Yao <yiqing.yao@amd.com>
Reviewed-by: Monk Liu <Monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/amdgpu_pm.c

@@ -2032,8 +2032,8 @@ static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_
 		}
 	}
 
-	/* setting should not be allowed from VF */
-	if (amdgpu_sriov_vf(adev)) {
+	/* setting should not be allowed from VF if not in one VF mode */
+	if (amdgpu_sriov_vf(adev) && !amdgpu_sriov_is_pp_one_vf(adev)) {
 		dev_attr->attr.mode &= ~S_IWUGO;
 		dev_attr->store = NULL;
 	}