Enable 32-bit armv8 NEON for libavc

Since ARM neon instructions were only used on armv7-a-neon
architecture variant, the default implementation for this
library doesn't use these advanced SIMD instructions.

Bug: 65568114
Test: lunch aosp_arm64; emulator # on oc-mr1-dev; boot to home screen
Change-Id: I7d0c75045fc69523861ed5a00f6033ac327f4031
1 file changed