It is good to know changes in headers and syscall tables across all
architectures so that the changes can be sync'ed at once. Move check for
arch-specific syscall table changes from tools/perf/arch for powerpc and
s390, to the generic check-headers.sh script, similar to how we do the
check for x86.
Suggested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Naveen N. Rao <naveen.n.rao@xxxxxxxxxxxxxxxxxx>
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