stmmac: debugfs entry name is not be changed when udev rename device name.

commit 481a7d154cbbd5ca355cc01cc8969876b240eded upstream.

Add one notifier for udev changes net device name.
Fixes: b6601323ef9e ("net: stmmac: debugfs entry name is not be changed when udev rename")

Signed-off-by: Jiping Ma <jiping.ma2@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Gou Hao <gouhao@uniontech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>