[PATCH] Correctly display PCI arbiter en-/disabled on some 4xx boards

Previously the strapping DCR/SDR was read to determine if the internal PCI
arbiter is enabled or not. This strapping bit can be overridden, so now
the current status is read from the correct DCR/SDR register.
Signed-off-by: Stefan Roese <sr@denx.de>

cpu/ppc4xx/cpu.c

@@ -88,14 +88,18 @@ int pci_arbiter_enabled(void)
 	return (mfdcr(cpc0_strp1) & CPC0_STRP1_PAE_MASK);
 #endif
 
-#if defined(CONFIG_440GX) || \
-    defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
-    defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
-    defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+#if defined(CONFIG_440GX) || defined(CONFIG_440SP) || defined(CONFIG_440SPE)
 	unsigned long val;
 
-	mfsdr(sdr_sdstp1, val);
-	return (val & SDR0_SDSTP1_PAE_MASK);
+	mfsdr(sdr_xcr, val);
+	return (val & 0x80000000);
+#endif
+#if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
+    defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	unsigned long val;
+
+	mfsdr(sdr_pci0, val);
+	return (val & 0x80000000);
 #endif
 }
 #endif