realtek: mdio-serdes: use correct device table identifier

realtek: mdio-serdes: use correct device table identifier

Use the correct identifier 'rtsds_of_match' instead of
'rtsds_mdio_of_match' because the latter doesn't exist.

This doesn't cause an error for 6.12. However, with 6.18 the
implementation of MODULE_DEVICE_TABLE has changed to use 'static' and
'used' [1] instead of 'extern' and 'unused' [2].

[1] https://github.com/torvalds/linux/blob/7d0a66e4bb9081d75c82ec4957c50034cb0ea449/include/linux/module.h#L260
[2] https://github.com/torvalds/linux/blob/adc218676eef25575469234709c2d87185ca223a/include/linux/module.h#L249

Signed-off-by: Jonas Jelonek <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21182
Signed-off-by: Robert Marko <[email protected]>