When copying to a u32 field we should use sizeof(u32) and not
sizeof(*u32) in memcpy.
On 64bit systems like cortina_presidio-asic-emmc_defconfig using
sizeof(*u32) leads to a buffer overrun.
Fixes: febe13b438 ("net: cortina_ni: Add eth support for Cortina Access CAxxxx SoCs")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>