Snippets for stress-ng 0.22.00 from Alpine ppc64le

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-ppc64le/community/stress-ng/stress-ng-0.22.00-r0.log.

• /usr/include/sys/cdefs.h:4:2: warning: #warning usage of non-standard #include <sys/cdefs.h> is deprecated [-Wcpp]
      4 | #warning usage of non-standard #include <sys/cdefs.h> is deprecated
        |  ^~~~~~~