Use libbitflags-1.3.2

This updates Android.bp to still use the old version of libbitflags instead
of the most recent version. Also add a patch file for Android.bp which
ensures version 1.3.2 is still used after an update.

Test: Build
Change-Id: Idad820129faa85e99b4a556aa031c852b4761441
diff --git a/Android.bp b/Android.bp
index f471209..f44d482 100644
--- a/Android.bp
+++ b/Android.bp
@@ -67,7 +67,7 @@
         "zerocopy",
     ],
     rustlibs: [
-        "libbitflags",
+        "libbitflags-1.3.2",
         "libcfg_if",
         "liblibc",
         "libmemoffset",
diff --git a/patches/Android.bp.diff b/patches/Android.bp.diff
new file mode 100644
index 0000000..c7025be
--- /dev/null
+++ b/patches/Android.bp.diff
@@ -0,0 +1,13 @@
+diff --git a/Android.bp b/Android.bp
+index f471209..f44d482 100644
+--- a/Android.bp
++++ b/Android.bp
+@@ -67,7 +67,7 @@ rust_library {
+         "zerocopy",
+     ],
+     rustlibs: [
+-        "libbitflags",
++        "libbitflags-1.3.2",
+         "libcfg_if",
+         "liblibc",
+         "libmemoffset",