[POWERPC] get_property returns const

This just tidies up some of the remains.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/hwmon/ams/ams-pmu.c b/drivers/hwmon/ams/ams-pmu.c
index 4636ae0..1b01c21 100644
--- a/drivers/hwmon/ams/ams-pmu.c
+++ b/drivers/hwmon/ams/ams-pmu.c
@@ -146,7 +146,7 @@
 
 int __init ams_pmu_init(struct device_node *np)
 {
-	u32 *prop;
+	const u32 *prop;
 	int result;
 
 	mutex_lock(&ams_info.lock);
@@ -160,7 +160,7 @@
 	ams_info.bustype = BUS_HOST;
 
 	/* Get PMU command, should be 0x4e, but we can never know */
-	prop = (u32*)get_property(ams_info.of_node, "reg", NULL);
+	prop = get_property(ams_info.of_node, "reg", NULL);
 	if (!prop) {
 		result = -ENODEV;
 		goto exit;