sstate.bbclass: Add ${PACKAGE_EXTRA_ARCHS} to SSTATE_ARCHS
This makes sure files provided by packages that use any of the extra
architectures defined using ${PACKAGE_EXTRA_ARCHS} are cleaned from
tmp/sysroot-components when sstate_eventhandler2() executes.
Without this, changing a package from using one of the extra
architectures to another architecture would lead to files being
leftover in tmp/sysroot-components, which could later be picked up
when creating the RSS for another package rather than the files that
belonged to the updated package.
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
