We're seeing regular parallel make failures in applet headers in busybox.
This adds a patch to try and avoid the issue, building upon a fix already
backported from upstream. The patch has been sent to upstream.
[YOCTO #10116]
(From OE-Core rev: 199cef0e8a50b20d0ee6fefd1d4cf3372eba7728)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>