Revert "net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link"

This reverts commit e2423aa1 which is
commit a6aaa003

 upstream.

Pavel reports that it causes boot issues, so revert it for now.

Link: https://lore.kernel.org/r/20220429074341.GB1423@amd
Reported-by: Pavel Machek <pavel@denx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>