Have at least *some* default WWN to fall back on,

otherwise Sun branded FC cards won't configure.

Reviewed by:	Ken, Scott
Approved by:	re

sys/dev/isp/isp_freebsd.c

@@ -5280,6 +5280,10 @@ isp_default_wwn(ispsoftc_t * isp, int chan, int isactive, int iswwnn)
 			return (seed);
 		}
 		seed = iswwnn ? FCPARAM(isp, chan)->isp_wwnn_nvram : FCPARAM(isp, chan)->isp_wwpn_nvram;
+		if (seed) {
+			return (seed);
+		}
+		return (0x400000007F000009ull);
 	} else {
 		seed = iswwnn ? fc->def_wwnn : fc->def_wwpn;
 	}