illumos gate

Build errors with NULL pointer:

    ../../common/io/pcic.c: In function 'pcic_set_window':
    ../../common/io/pcic.c:2830:20: error: assignment makes integer from pointer without a cast [-Werror=int-conversion]
         memp->pcw_base = NULL;
                        ^
    In file included from ../../common/sys/param.h:48:0,
                     from ../../common/io/pcic.c:48:
    ../../common/sys/null.h:32:14: error: passing argument 8 of 'pcmcia_map_reg' makes integer from pointer without a cast [-Werror=int-conversion]
     #define NULL ((void *)0)
                  ^
    ../../common/io/pcic.c:2889:24: note: in expansion of macro 'NULL'
             &window->attr, NULL);
                            ^~~~
    In file included from ../../common/io/pcic.c:75:0:
    ../../common/sys/sservice.h:578:5: note: expected 'uint32_t {aka unsigned int}' but argument is of type 'void *'
     int pcmcia_map_reg(dev_info_t *, dev_info_t *, ra_return_t *,
         ^~~~~~~~~~~~~~
    cc1: all warnings being treated as errors