dts: frdm_k64f: make application state partition a reserved area

A number of sectors are declared in the frdm_k64f flash partitions
node as part of an "application state" partition. Rather than require
users to treat this area of flash as a single partition, delete the
application-state node and leave a comment in its place describing its
purpose.

This enables use cases where the flash sectors must be split into
multiple partitions without defining overlapping partitions in overlay
files.

Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
1 file changed