ppc4xx: Print PCI synchronous clock frequency upon bootup

Some 4xx variants (e.g. 440EP(x)/GR(x)) have an internal
synchronous PCI clock. Knowledge about the currently configured
value might be helpful. So let's print it out upon bootup.

Signed-off-by: Stefan Roese <sr@denx.de>

cpu/ppc4xx/cpu.c

@@ -608,10 +608,17 @@ int checkcpu (void)
 		break;
 	}
 
-	printf (" at %s MHz (PLB=%lu, OPB=%lu, EBC=%lu MHz)\n", strmhz(buf, clock),
+	printf (" at %s MHz (PLB=%lu OPB=%lu EBC=%lu",
+		strmhz(buf, clock),
 		sys_info.freqPLB / 1000000,
 		get_OPB_freq() / 1000000,
 		sys_info.freqEBC / 1000000);
+#if defined(CONFIG_PCI) && \
+	(defined(CONFIG_440EP) || defined(CONFIG_440EPX) || \
+	 defined(CONFIG_440GR) || defined(CONFIG_440GRX))
+	printf(" PCI=%lu MHz", sys_info.freqPCI / 1000000);
+#endif
+	printf(")\n");
 
 	if (addstr[0] != 0)
 		printf("       %s\n", addstr);