Adding fixes for missing highway header file on S390X/PPC and cmake tool error for PPC

[surenderky]

Adding fixes for missing highway header file on S390X/PPC google/highway#2406

Add fixes for cmake tool error for PPC when using gold linker envoyproxy/envoy-openssl#232

[openshift-ci]

Hi @surenderky. Thanks for your PR.

I'm waiting for a github.com member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[surenderky]

FYI @zmiklank

[zmiklank]

/retest