The Fujitsu Siemens Scaleo E HTPC has a dm140 lcd with a different USB
vendor/device id than currently supported by the dm140 driver, so add support
for this "new" USB device id.

Function Compare didn't work with USB vendor/device ids >= 2^15 (ie 0x925d)
because the value read from the string was not handled as a signed short. Values
should be signed and compared as such.
Merge pull request #3722 from robho/fujitsu_siemens_scaleo_e_lcd

Add support for Fujitsu Siemens Scaleo E lcd