staging: kpc2000: Fix long constant sparse warning

It fixed following warning in kpc2000 driver
"constant XXXX is so big it is unsigned long"

Signed-off-by: Harsh Jain <harshjain32@gmail.com>
Link: https://lore.kernel.org/r/20190831115532.2398-1-harshjain32@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>