Adding the print and accessibility pacelables to framework.aidl

1. There are a few parcelable classes related to printing and accessibility
   which are public but not added in the framework.aidl list so third parties
   cannot write aidl interfaces that pass these classes. As these classes
   are public it is resonable for devepers to be able to pass them between
   processes.

Change-Id: I85da1de5198902b74f19d23e3fe16b45b4a11051