ddr: marvell: a38x: old: Backport immutable debug settings

Backport the option to compile with immutable debug settings also to
the old implementation of the DDR3 training code.

The original PR for mv-ddr-marvell can be seen at
  https://github.com/MarvellEmbeddedProcessors/mv-ddr-marvell/pull/45/

Signed-off-by: Marek BehĂșn <kabel@kernel.org>
3 files changed