CVE-2025-40347 net: enetc: fix the deadlock of enetc_mdio_lock

In the Linux kernel, the following vulnerability has been resolved: net: enetc: fix the deadlock of enetcmdiolock After applying the workaround for err050089, the LS1028A platform experiences RCU stalls on RT kernel. This issue is caused by the recursive acquisition of the read lock enetcmdiolock...