We are only supporting the PTP subset of MTP in host mode and have
no plans for full MTP, so calling it Mtp was misleading.
Also moved ACTION_MTP_SESSION_END Intent name to android.provider.MediaStore
and added it to the public API.
Change-Id: Ie35d15864d5972e65a39b982aa51316ecca3725a
Signed-off-by: Mike Lockwood <lockwood@android.com>