base.bbclass: check all entries of FILESPATH for MACHINE overrides
The logic which looks for MACHINE overrides in SRC_URI and updates
PACKAGE_ARCH was checking only certain subdirectories of the recipes parent
which, amongst other issues, doesn't account for SRC_URI overrides in layers.
This patch changes the logic such that all FILESPATH entries are checked
for children named for MACHINE.
Signed-off-by: Joshua Lock <josh@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
