linux-phytec-fsl

SELinux: skip file_name_trans_write() when policy downgraded.

When policy version is less than POLICYDB_VERSION_FILENAME_TRANS,
skip file_name_trans_write().

Signed-off-by: Roy.Li <rongqing.li@windriver.com>
Signed-off-by: Eric Paris <eparis@redhat.com>