Sysupgrade: Add support for devcfg version check

This change adds support to check devcfg version and
allows sysupgrade only if the version is higher.

Change-Id: I7192f428c50c1b1b9eeddd1aac0d57d341d32436
Signed-off-by: Pavithra Palanisamy <pavip@codeaurora.org>
2 files changed