libvpx: Pull from upstream

source/libvpx/build/make/configure.sh

Index: source/libvpx/build/make/configure.sh
===================================================================
--- source/libvpx/build/make/configure.sh	(revision 271012)
+++ source/libvpx/build/make/configure.sh	(working copy)
@@ -518,7 +518,7 @@
         --enable-?*|--disable-?*)
         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
         if echo "${ARCH_EXT_LIST}" | grep "^ *$option\$" >/dev/null; then
-            [ $action = "disable" ] && RTCD_OPTIONS="${RTCD_OPTIONS}${opt} "
+            [ $action = "disable" ] && RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${option} "
         elif [ $action = "disable" ] && ! disabled $option ; then
           echo "${CMDLINE_SELECT}" | grep "^ *$option\$" >/dev/null ||
             die_unknown $opt
@@ -792,8 +792,12 @@
     arm*)
         # on arm, isa versions are supersets
         case ${tgt_isa} in
+        armv8)
+            soft_enable neon
+            ;;
         armv7)
             soft_enable neon
+            soft_enable neon_asm
             soft_enable media
             soft_enable edsp
             soft_enable fast_unaligned
@@ -831,7 +835,7 @@
                 check_add_cflags  -march=armv7-a -mfloat-abi=${float_abi}
                 check_add_asflags -march=armv7-a -mfloat-abi=${float_abi}
 
-                if enabled neon
+                if enabled neon || enabled neon_asm
                 then
                     check_add_cflags -mfpu=neon #-ftree-vectorize
                     check_add_asflags -mfpu=neon
@@ -878,7 +882,7 @@
             tune_asflags="--cpu="
             if [ -z "${tune_cpu}" ]; then
                 if [ ${tgt_isa} = "armv7" ]; then
-                    if enabled neon
+                    if enabled neon || enabled neon_asm
                     then
                         check_add_cflags --fpu=softvfp+vfpv3
                         check_add_asflags --fpu=softvfp+vfpv3