[x265] [PATCH 010 of 307] Correct the asm type of pixel_avg_weight_w32 and pixel_avg_weight_w64

[mythreyi at multicorewareinc.com]

# HG changeset patch
# User Vignesh Vijayakumar
# Date 1499340795 -19800
#      Thu Jul 06 17:03:15 2017 +0530
# Node ID 328d10aa0ff4d3097ff4941e224d2cdf6774a7c8
# Parent  84757e275a5427f0875fc4fd651bd1c48d534e8f
Correct the asm type of pixel_avg_weight_w32 and pixel_avg_weight_w64

diff -r 84757e275a54 -r 328d10aa0ff4 source/common/x86/mc-a.asm
--- a/source/common/x86/mc-a.asm	Wed Jul 05 10:37:01 2017 +0530
+++ b/source/common/x86/mc-a.asm	Thu Jul 06 17:03:15 2017 +0530
@@ -3653,6 +3653,7 @@
     vextracti32x4 [t0+t1], m0, 3
     AVG_END 4
 
+INIT_YMM avx2
 cglobal pixel_avg_weight_w32
     BIWEIGHT_START
     AVG_START 5
@@ -3668,6 +3669,7 @@
     mova    [t0], m0
     AVG_END
 
+INIT_YMM avx2
 cglobal pixel_avg_weight_w64
     BIWEIGHT_START
     AVG_START 5