Some revisions of the FRITZ!7530 use a Toshiba NAND with 8 bit ECC in
contrast to the Macronix NAND with 4 bit ECC. This removes the hardcoded
ECC strength and step size as set in qcom-ipq4019.dtsi, thus relying on the
kernel NAND detection routines to correclty set up the ECC parameters.
Signed-off-by: Andreas Böhler <dev@aboehler.at>
(cherry picked from commit f167f4a9a42e6d1e186487883500299cc82b1b9f)