Put patch in patches dir.

Test: treehugger
Bug: 339424309
Change-Id: I477ffb17200af9335adf9e724bffc1d670ab4861
diff --git a/cargo_embargo.json b/cargo_embargo.json
index 2004b22..1b47f0e 100644
--- a/cargo_embargo.json
+++ b/cargo_embargo.json
@@ -3,7 +3,7 @@
   "tests": true,
   "package": {
     "p9": {
-      "patch": "Android.bp.patch",
+      "patch": "patches/Android.bp.patch",
       "host_first_multilib": true
     }
   }
diff --git a/Android.bp.patch b/patches/Android.bp.patch
similarity index 100%
rename from Android.bp.patch
rename to patches/Android.bp.patch