fio: mark broken on platform without native libatomic

Unlock the builder for now

srcpkgs/fio/template

@@ -20,6 +20,11 @@ case "$XBPS_TARGET_MACHINE" in
 	i686*|x86_64*|ppc64*) makedepends+=" libnuma-devel"
 esac
 
+if [ "$XBPS_TARGET_NO_ATOMIC8" ]; then
+	makedepends+=" libatomic-devel"
+	broken="https://build.voidlinux.org/builders/armv6l-musl_builder/builds/28631/steps/shell_3/logs/stdio"
+fi
+
 do_configure() {
 	./configure --prefix=/usr --extra-cflags="$CFLAGS" --disable-native
 }