docs: Added release notes for Google APIs System Image v4.
docs: Added release notes for Google APIs System Image v4.

Change-Id: Iac43dc318de44d19d48b0977c951cbc600b5c396

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