Add human readable inputType into dump()

Before:
Input type: 540801

After:
Input type: 540801(class=1)|Password

Most other things are fine as it's easy to convert an integer to the corresponding constant, but computing bit flags in a bugreport is time consuming and error prone.

Bug: 288587392
Change-Id: Ic2ae3354b26d7cdbfe0294bb40936e1e75d1967b