strace: fix build against 5.15 kernel/kernel-headers

kernel 5.15 removed ipx.h from the uapi, but strace hasn't adjusted
its tests to the removal.

There is a WIP patch on the esyr/5.15 branch that solves the problem,
so we grab it here, adjust for context and fix our build problem.

When strace updates to 5.15, and we can bump our version and drop
this patch.

Upstream-Status: Backport [commit cca828197c0e16c2599129114]

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>