pcm052: fix MTD partitioning

MTD partitioning in current pcm052 configuration is inconsistent.
Fix it across MTDPARTS_DEFAULT, CONFIG_EXTRA_ENV_SETTINGS, and
CONFIG_ENV_OFFSET[_REDUND].

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
1 file changed