Mark libxz as recovery_available for update_engine_sideload

Test: build update_engine_sideload
Change-Id: I8dbf8f108052c5df3dd0b90af48f5f618c472e99
diff --git a/Android.bp b/Android.bp
index d475340..634c2d3 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,13 +1,14 @@
 cc_library_static {
     name: "libxz",
     host_supported: true,
+    recovery_available: true,
     srcs: [
         "linux/lib/xz/xz_crc32.c",
         "linux/lib/xz/xz_dec_bcj.c",
         "linux/lib/xz/xz_dec_lzma2.c",
         "linux/lib/xz/xz_dec_stream.c",
     ],
-    include_dirs: ["external/xz-embedded/userspace/"],
+    local_include_dirs: ["userspace"],
 
     // Enable branch/call/jump filters. See http://b/27817327.
     cflags: [