staging: cxt1e1: hwprobe: fix incorrect type in assignment

This patch fixes "incorrect type in argument 1" warning from sparse.

Signed-off-by: Matei Oprea <eu@opreamatei.ro>
Cc: ROSEdu Kernel Community <firefly@lists.rosedu.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>