kitakami-common: sepolicy: Added missing sysfs type to fix changes made in LineageOS policies.

Change-Id: Id0369cdd18511a723ea93e52968b203f432c47e2

sepolicy/vendor/file.te

@@ -4,6 +4,7 @@ type secd_data_file, file_type;
 type secd_socket, file_type;
 type sysfs_addrsetup, fs_type, sysfs_type;
 type sysfs_camera_torch, sysfs_type, file_type;
+type sysfs_disk_stat, sysfs_type, file_type;
 type sysfs_performance, sysfs_type, file_type;
 type sysfs_timekeep, fs_type, sysfs_type;
 type tad_socket, file_type;