[MIPS] Treat CPUs with AR bit as physically indexed.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/c-r4k.c

@@ -1009,7 +1009,12 @@ static void __init probe_pcache(void)
 		break;
 	case CPU_24K:
 	case CPU_34K:
-		if (!(read_c0_config7() & (1 << 16)))
+		if ((read_c0_config7() & (1 << 16))) {
+			/* effectively physically indexed dcache,
+			   thus no virtual aliases. */
+			c->dcache.flags |= MIPS_CACHE_PINDEX;
+			break;
+		}
 	default:
 		if (c->dcache.waysize > PAGE_SIZE)
 			c->dcache.flags |= MIPS_CACHE_ALIASES;