Add touchscreen-composite support to machines based on common-pc and
common-pc-64, along with several other Atom boards that don't inherit
from those, thus providing those machines with the out-of-the-box
ability to make use of the set of USB touchscreen devices supported by
the composite USB
This patchset adds support for USB touchscreens that can use the
'composite' touchscreen driver.
Build-tested only (nuc and crownbay) since I don't have a USB
touchscreen to test.
Fixes Yocto Bug 4770 - Enable USB touchscreens
The following changes since commit
