[PATCH] [X86] Added rrk, rrkz, rmk, rmkz, rmbk, rmbkz versions of AVX512 FP packed instructions.

[Robert Khasanov]

  These tests cover all possible versions of AVX512 FP packed instructions.
  There was created in the same way as encoding tests for AVX instructions (test/MC/X86/x86-32-avx.s and test/MC/X86/x86_64-avx-encoding.s): they cover all possible AVX encodings.

http://llvm-reviews.chandlerc.com/D2932