force purgeability for assets
force purgeability for assets

Change-Id: I1067cfb91846a05290ed26ce9a62eb82d3170719
http://b/issue?id=1860187

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base