[PATCH] use __u64 rather than u64 in parisc statfs structs

Use __u64 rather than u64 in the struct statfs64 exported to userspace.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>