modemloader: Use hw.revision instead of ro.revision

This change requires you to hexedit your cbd binary,
but in turn frees us from having to ignore ro.revision
in init.

Change-Id: I9c43fbbf5895888ea4bceff2a08a5ed8de77b921
diff --git a/modemloader/modemloader.c b/modemloader/modemloader.c
index 61dff80..e661e8b 100644
--- a/modemloader/modemloader.c
+++ b/modemloader/modemloader.c
@@ -89,7 +89,7 @@
 
     parse_hardware_revision(&revision);
     snprintf(ro_revision, PROP_VALUE_MAX, "%d", revision);
-    property_set("ro.revision", ro_revision);
+    property_set("hw.revision", ro_revision);
 
     return 0;
 }