swscale/x86/output: add missing AVX2 support preprocessor wrappers

Fixes compilation with old yasm Signed-off-by: James Almer <jamrial@gmail.com>
4 years ago · 621e2625e0
--- a/libswscale/x86/output.asm
+++ b/libswscale/x86/output.asm
@@ -543,7 +543,9 @@ nv12_inner_%1:
    RET
 %endmacro

 %if HAVE_AVX2_EXTERNAL
 INIT_YMM avx2
 yuv2nv12cX_fn yuv2nv12
 yuv2nv12cX_fn yuv2nv21
 %endif
 %endif ; ARCH_X86_64