cavs: add a sse2 idct implementation

Multimedia / FFmpeg - Ronald S. Bultje [gmail.com] - 6 April 2017 10:03 EDT

This makes using the function pointer ff_add_pixels_clamped() unnecessary, since we always know what the best implementation is at compile-time.

2f0591c cavs: add a sse2 idct implementation.
libavcodec/x86/cavsdsp.c | 15 +++++++++++++-
libavcodec/x86/cavsidct.asm | 48 ++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 61 insertions(+), 2 deletions(-)

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