bsd-user: Track change in FreeBSD SYSCTL(9) types

Originally from Garrett Cooper in FreeBSD PR ports/155558
http://www.freebsd.org/cgi/query-pr.cgi?pr=155558

Signed-off-by: Ed Maste <emaste@freebsd.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

bsd-user/syscall.c

@@ -211,7 +211,11 @@ static int sysctl_oldcvt(void *holdp, size_t holdlen, uint32_t kind)
         *(uint64_t *)holdp = tswap64(*(unsigned long *)holdp);
         break;
 #endif
+#if !defined(__FreeBSD_version) || __FreeBSD_version < 900031
     case CTLTYPE_QUAD:
+#else
+    case CTLTYPE_U64:
+#endif
         *(uint64_t *)holdp = tswap64(*(uint64_t *)holdp);
         break;
     case CTLTYPE_STRING: