kconfig: Improve USE_CODE_PARTITION prompt and help string

The prompt and help string for USE_CODE_PARTITION were too terse and
didn't make it clear that it's related to devicetree, which confused me.
Spell things out in more detail.

Unless the meaning of a symbol is completely obvious from context, aim
for at least a few sentences of help text. Think about what would be
confusing for someone coming at it without much context.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
1 file changed