powerpc/fsl/dts: Enable WA for erratum A-009885 on fman3l MDIO buses

commit 0d375d61 upstream.

This block is used in (at least) T1024 and T1040, including their
variants like T1023 etc.

Fixes: d55ad296

 ("powerpc/mpc85xx: Create dts components for the FSL QorIQ DPAA FMan")
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>