Merge "Never expand proc_type attribute" into pi-dev

am: d8d7a3f7

Change-Id: Ibd8dc38bf69f85a9ef05ee1eee668a11c6262657

prebuilts/api/28.0/public/attributes

@@ -38,6 +38,7 @@ attribute vendor_file_type;
 
 # All types used for procfs files.
 attribute proc_type;
+expandattribute proc_type false;
 
 # All types used for sysfs files.
 attribute sysfs_type;

public/attributes

@@ -38,6 +38,7 @@ attribute vendor_file_type;
 
 # All types used for procfs files.
 attribute proc_type;
+expandattribute proc_type false;
 
 # All types used for sysfs files.
 attribute sysfs_type;