fs-perms: Ensure /usr/src/debug/ file modes are correct
If files are copied into /usr/src/debug directly from WORKDIR (e.g. makedevs)
we'd get the permissions from the checkout which would depend on the host umask.
Avoid this and be deterministic by setting the file modes consistently. Core
code copies the files in so we're responsible for the permissions.
Unfortunately to force this change to apply we need to invalidate both
the package tasks and the hash equivalance mappings since file mode
'corruption' already made it into the output hashes (both input options
were mapped to the output hashes).
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
