[AVX512] add PSRLW Intrinsic 
[AVX512] add PSRLW Intrinsic 

Fixing tab/space indentation.
Differential Revision: http://reviews.llvm.org/D15751



git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@256561 91177308-0d34-0410-b5e6-96231b3b80d8

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