Input: usbtouchscreen - only expose e2i configure option in expert mode

as is the case of all other devices supported by usbtouchscreen.c

Also list e2i under the composite configure option (TOUCHSCREEN_USB_COMPOSITE)

Signed-off-by: Shawn Landden <shawnlandden@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>