x86-64: Fix FMA4 detection in ifunc [BZ #26534]
A typo in commit 107e6a3c causes the FMA4 code path to be taken on systems that support FMA, even if they do not support FMA4. Fix this to detect FMA4.
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A typo in commit 107e6a3c causes the FMA4 code path to be taken on systems that support FMA, even if they do not support FMA4. Fix this to detect FMA4.