[NTOS:KE/x64] Add detection of SSE 4.2

Author: tkreuzer

ntoskrnl/ke/amd64/cpu.c

@@ -206,6 +206,7 @@ KiGetFeatureBits(VOID)
     if (VersionInfo.Ecx.Bits.SSSE3) FeatureBits |= KF_SSSE3;
     if (VersionInfo.Ecx.Bits.CMPXCHG16B) FeatureBits |= KF_CMPXCHG16B;
     if (VersionInfo.Ecx.Bits.SSE4_1) FeatureBits |= KF_SSE4_1;
+    if (VersionInfo.Ecx.Bits.SSE4_2) FeatureBits |= KF_SSE4_2;
     if (VersionInfo.Ecx.Bits.XSAVE) FeatureBits |= KF_XSTATE;
     if (VersionInfo.Ecx.Bits.RDRAND) FeatureBits |= KF_RDRAND;