The configure override was too restrictive, it needed both 'arm' and
'neon' to trigger, which breaks on aarch64. Since TUNE_FEATURES is the
only qualifier that matters, drop the 'arm' override.
Buildtested for 'genericarmv8' and 'qemux86' machines.
[RP: Added class-target override to avoid failures for libpng-native] Signed-off-by: Koen Kooi <koen.kooi@linaro.org> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
