Update to add bitness info to system/manifest.xml

Bug: 35966597
Test: marlin boots
Change-Id: I92abc916cfe422312d7dc67a7410115eb03cd5d8
diff --git a/manifest.xml b/manifest.xml
index 06b57b6..02cd8a1 100644
--- a/manifest.xml
+++ b/manifest.xml
@@ -21,7 +21,7 @@
     </hal>
     <hal>
         <name>android.hidl.memory</name>
-        <transport>passthrough</transport>
+        <transport arch="32+64">passthrough</transport>
         <version>1.0</version>
         <interface>
             <name>IMapper</name>