staging: wilc1000: off by one in get_handler_from_id()

The > should be >= here or we read beyond the end of the array.

Fixes: d42ab083 ('staging: wilc1000: use id value as argument')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>