b8238df sysupgrade: support "backup" attribute
This update requires "sysupgrade" method callers to pass "backup"
attribute if $UPGRADE_BACKUP is used in the project.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit
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base-files | ||
boot | ||
devel | ||
firmware | ||
kernel | ||
libs | ||
network | ||
system | ||
utils | ||
Makefile |