[POWERPC] pseries: Constify & voidify get_property()

Now that get_property() returns a void *, there's no need to cast its
return value. Also, treat the return value as const, so we can
constify get_property later.

pseries platform changes.

Built for pseries_defconfig

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

drivers/char/hvsi.c

@@ -1276,11 +1276,10 @@ static int __init hvsi_console_init(void)
 			vty != NULL;
 			vty = of_find_compatible_node(vty, "serial", "hvterm-protocol")) {
 		struct hvsi_struct *hp;
-		uint32_t *vtermno;
-		uint32_t *irq;
+		const uint32_t *vtermno, *irq;
 
-		vtermno = (uint32_t *)get_property(vty, "reg", NULL);
-		irq = (uint32_t *)get_property(vty, "interrupts", NULL);
+		vtermno = get_property(vty, "reg", NULL);
+		irq = get_property(vty, "interrupts", NULL);
 		if (!vtermno || !irq)
 			continue;