Dragon: Add support for OS descriptor headers

Add os descriptor header to support auto installation
of MTP driver.

Fall back to 0x4ee1 and 0x4ee2 PIDs as libMTP seems
to have hardcoded those values to initiate request
for OS descriptors

Alternative: report to libmtp team
Output of mtp-detect:
badhri@badhri:~$ mtp-detect
Unable to open ~/.mtpz-data for reading, MTPZ disabled.libmtp version: 1.1.6

Listing raw device(s)
Device 0 (VID=18d1 and PID=5203) is UNKNOWN.
Please report this VID/PID and the device model to the libmtp development team

Bug: 24583401
BUG=chrome-os-partner:43409

Change-Id: I953eb33debdc80d85dfe8b54a20c4481a8fc7300
1 file changed