adb: temporary fix to limit USB transfers to 4KB.

Dragonboards currently can't handle large USB transfers, this lowers
the max transfer size to get the board working for now.

Longer-term we'll either get the Dragonboard working or land something
upstream that will allow each board to custom-define this value.

Bug: http://b/24905170.
Change-Id: If87c4dd3ed4522c3e15b8a50920049fdbe9a82ea
(cherry picked from commit 58e6732cb0dad86946e98fdab79cff43be6a03ce)
1 file changed