Add documentation for CPUID bit #64+17
CLA: trivial
@@ -97,6 +97,8 @@ and RORX;
=item bit #64+16 denoting availability of AVX512F extension;
+=item bit #64+17 denoting availability of AVX512DQ extension;
+
=item bit #64+18 denoting availability of RDSEED instruction;
=item bit #64+19 denoting availability of ADCX and ADOX instructions;
