psplash: copy image files from workdir instead of next to recipe
During parsing this recipe builds up a list of splash image files,
however it was recording full paths to local files (i.e. the files next
to the recipe) and then in do_compile it was pointing to those instead
of the fetched files in WORKDIR. Fix it to use the fetched files which
has the added benefit of the do_compile signature not changing if the
recipe is moved around.
Fixes [YOCTO #5250].
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
