[POWERPC] CPM: Change from fsl,brg-frequency to brg/clock-frequency

As suggested by David Gibson, now that we have a separate node
for the baud rate generators, it's better to use the standard
clock-frequency property than a cpm-node-level fsl,brg-frequency
property.

This patch updates existing places where fsl,brg-frequency is
used.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/boot/cuboot-8xx.c b/arch/powerpc/boot/cuboot-8xx.c
index 88ed840..0e82015 100644
--- a/arch/powerpc/boot/cuboot-8xx.c
+++ b/arch/powerpc/boot/cuboot-8xx.c
@@ -29,10 +29,12 @@
 	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq);
 
 	node = finddevice("/soc/cpm");
-	if (node) {
+	if (node)
 		setprop(node, "clock-frequency", &bd.bi_busfreq, 4);
-		setprop(node, "fsl,brg-frequency", &bd.bi_busfreq, 4);
-	}
+
+	node = finddevice("/soc/cpm/brg");
+	if (node)
+		setprop(node, "clock-frequency",  &bd.bi_busfreq, 4);
 }
 
 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,