Disable the qoriq errata fix for now

It hangs more often than it actually works it seems.  Further debugging is
needed to determine why, but for now the system needs to be able to boot.

sys/powerpc/mpc85xx/platform_mpc85xx.c

@@ -195,7 +195,9 @@ mpc85xx_attach(platform_t plat)
 	}
 	ccsrbar_va = pmap_early_io_map(ccsrbar, ccsrsize);
 
+#if 0
 	mpc85xx_fix_errata(ccsrbar_va);
+#endif
 	mpc85xx_enable_l3_cache();
 
 	return (0);