oe/recipeutils: Fix copying patches when BBLAYERS entries are not normalised
`devtool` uses `copy_recipe_files` for the upgrade operation when
creating the new, workspace recipe. Before handling the copy operations,
the function checks the entry in `SRC_URI` against `FILE` while in turn
uses absolute paths. When BBLAYERS contains entries that are not
normalised, this check will fail resulting in having the recipe in the
workspace without the initial patches.
Signef-off-by: Robert Drab <robert.drab@huawei.com> Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
