Fix compilation of libavcodec/x86/hevc_deblock.asm with nasm.

Suggested-by: Reimar
Merge remote-tracking branch 'cehoyos/master'

* cehoyos/master:
  Fix compilation of libavcodec/x86/hevc_deblock.asm with nasm.

Merged-by: Michael Niedermayer <michaelni@gmx.at>